diff --git a/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutput.java b/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutput.java
index 4eff9bf..f74db3e 100644
--- a/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutput.java
+++ b/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutput.java
@@ -25,7 +25,9 @@
 import java.io.OutputStream;
 import java.io.OutputStreamWriter;
 import java.nio.file.Files;
+import java.nio.file.OpenOption;
 import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
 import java.util.Collection;
 import java.util.List;
 import java.util.function.Function;
@@ -43,19 +45,16 @@ public abstract class RaceOutput {
 
     protected final Race race;
 
-    protected Path output_directory_path;
     protected String year;
     protected String race_name_for_results;
     protected String race_name_for_filenames;
-    private String overall_results_filename;
-    String prizes_filename;
-    String notes_filename;
+    private Path output_directory_path;
 
     //////////////////////////////////////////////////////////////////////////////////////////////////
 
     protected abstract String getFileSuffix();
     protected abstract String getResultsHeader();
-    protected abstract String getPrizesSectionHeader();
+    protected abstract String getPrizesHeader();
     protected abstract String getPrizeCategoryHeader(final PrizeCategory category) ;
     protected abstract String getPrizeCategoryFooter();
 
@@ -79,7 +78,7 @@ public abstract class RaceOutput {
      */
     public void printResults() throws IOException {
 
-        final OutputStream stream = Files.newOutputStream(output_directory_path.resolve(overall_results_filename + getFileSuffix()));
+        final OutputStream stream = getOutputStream(race_name_for_filenames, "overall", year);
 
         try (final OutputStreamWriter writer = new OutputStreamWriter(stream)) {
 
@@ -90,17 +89,31 @@ public void printResults() throws IOException {
 
     public void printPrizes() throws IOException {
 
-        final OutputStream stream = Files.newOutputStream(output_directory_path.resolve(prizes_filename + getFileSuffix()));
+        final OutputStream stream = getOutputStream(race_name_for_filenames, "prizes", year);
 
         try (final OutputStreamWriter writer = new OutputStreamWriter(stream)) {
 
-            writer.append(getPrizesSectionHeader());
+            writer.append(getPrizesHeader());
             printPrizes(writer);
         }
     }
 
     //////////////////////////////////////////////////////////////////////////////////////////////////
 
+    protected OutputStream getOutputStream(final String race_name, final String output_type, final String year) throws IOException {
+        return getOutputStream(race_name, output_type, year, StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING, StandardOpenOption.WRITE);
+    }
+
+    protected OutputStream getOutputStream(final String race_name, final String output_type, final String year, final OpenOption... options) throws IOException {
+        return Files.newOutputStream(getOutputFilePath(race_name, output_type, year), options);
+    }
+
+    Path getOutputFilePath(final String race_name, final String output_type, final String year) {
+        return output_directory_path.resolve(STR."\{race_name}_\{output_type}_\{year}\{getFileSuffix()}");
+    }
+
+    //////////////////////////////////////////////////////////////////////////////////////////////////
+
     private void configure() {
 
         readProperties();
@@ -117,10 +130,6 @@ private void readProperties() {
 
     protected void constructFilePaths() {
 
-        overall_results_filename = STR."\{race_name_for_filenames}_overall_\{year}";
-        prizes_filename = STR."\{race_name_for_filenames}_prizes_\{year}";
-        notes_filename = STR."\{race_name_for_filenames}_processing_notes_\{year}";
-
         output_directory_path = race.getPath("../output");
     }
 
diff --git a/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputCSV.java b/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputCSV.java
index 6a58242..bdea8a9 100644
--- a/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputCSV.java
+++ b/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputCSV.java
@@ -45,7 +45,7 @@ public String getFileSuffix() {
     }
 
     @Override
-    public String getPrizesSectionHeader() {
+    public String getPrizesHeader() {
         return "";
     }
 
diff --git a/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputHTML.java b/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputHTML.java
index bfc94cd..2d4e372 100644
--- a/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputHTML.java
+++ b/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputHTML.java
@@ -22,16 +22,13 @@
 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.OutputStreamWriter;
-import java.nio.file.Files;
 import java.nio.file.StandardOpenOption;
 
 import static org.grahamkirby.race_timing.common.Race.LINE_SEPARATOR;
 
 public abstract class RaceOutputHTML extends RaceOutput {
 
-    protected static final String SOFTWARE_CREDIT_LINK_TEXT = "<p style=\"font-size:smaller; font-style:italic;\">Results generated using <a href=\"https://github.com/grahamkirby/race-timing\">race-timing</a>.</p>";
-
-    protected String combined_results_filename;
+    private static final String SOFTWARE_CREDIT_LINK_TEXT = "<p style=\"font-size:smaller; font-style:italic;\">Results generated using <a href=\"https://github.com/grahamkirby/race-timing\">race-timing</a>.</p>";
 
     //////////////////////////////////////////////////////////////////////////////////////////////////
 
@@ -43,7 +40,7 @@ protected RaceOutputHTML(final Race race) {
 
     public void printCreditLink() throws IOException {
 
-        final OutputStream stream = Files.newOutputStream(output_directory_path.resolve(combined_results_filename + getFileSuffix()), StandardOpenOption.APPEND);
+        final OutputStream stream = getOutputStream(race_name_for_filenames, "combined", year, StandardOpenOption.APPEND);
 
         try (final OutputStreamWriter writer = new OutputStreamWriter(stream)) {
             writer.append(SOFTWARE_CREDIT_LINK_TEXT);
@@ -52,12 +49,12 @@ public void printCreditLink() throws IOException {
 
     public void printCombined() throws IOException {
 
-        final OutputStream stream = Files.newOutputStream(output_directory_path.resolve(combined_results_filename + getFileSuffix()));
+        final OutputStream stream = getOutputStream(race_name_for_filenames, "combined", year);
 
         try (final OutputStreamWriter writer = new OutputStreamWriter(stream)) {
 
             writer.append("<h3>Results</h3>").append(LINE_SEPARATOR);
-            writer.append(getPrizesSectionHeader());
+            writer.append(getPrizesHeader());
 
             printPrizes(writer);
 
@@ -68,20 +65,13 @@ public void printCombined() throws IOException {
 
     //////////////////////////////////////////////////////////////////////////////////////////////////
 
-    @Override
-    protected void constructFilePaths() {
-
-        super.constructFilePaths();
-        combined_results_filename = STR."\{race_name_for_filenames}_combined_\{year}";
-    }
-
     @Override
     public String getFileSuffix() {
         return ".html";
     }
 
     @Override
-    public String getPrizesSectionHeader() {
+    public String getPrizesHeader() {
         return STR."<h4>Prizes</h4>\{LINE_SEPARATOR}";
     }
 
diff --git a/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputPDF.java b/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputPDF.java
index c8bd041..44ac979 100644
--- a/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputPDF.java
+++ b/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputPDF.java
@@ -48,7 +48,7 @@ protected RaceOutputPDF(final Race race) {
     @Override
     public void printPrizes() throws IOException {
 
-        final PdfWriter writer = new PdfWriter(output_directory_path.resolve(prizes_filename + getFileSuffix()).toString());
+        final PdfWriter writer = new PdfWriter(getOutputFilePath(race_name_for_filenames, "prizes", year).toString());
 
         try (final Document document = new Document(new PdfDocument(writer))) {
             printPrizes(document);
@@ -61,7 +61,7 @@ protected String getFileSuffix() {
     }
 
     @Override
-    protected String getPrizesSectionHeader() {
+    protected String getPrizesHeader() {
         return "";
     }
 
diff --git a/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputText.java b/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputText.java
index 6f82d53..70e1969 100644
--- a/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputText.java
+++ b/src/main/java/org/grahamkirby/race_timing/common/output/RaceOutputText.java
@@ -20,9 +20,7 @@
 import org.grahamkirby.race_timing.common.categories.PrizeCategory;
 
 import java.io.IOException;
-import java.io.OutputStream;
 import java.io.OutputStreamWriter;
-import java.nio.file.Files;
 
 import static org.grahamkirby.race_timing.common.Race.LINE_SEPARATOR;
 
@@ -38,7 +36,7 @@ protected String getFileSuffix() {
     }
 
     @Override
-    protected String getPrizesSectionHeader() {
+    protected String getPrizesHeader() {
         return STR."""
             \{race_name_for_results} Results \{year}
             ============================
@@ -74,9 +72,7 @@ public void printNotes() throws IOException {
             reduce((s1, s2) -> STR."\{s1}, \{s2}").
             ifPresent(s -> race.getNotes().append("Converted to title case: ").append(s));
 
-        final OutputStream stream = Files.newOutputStream(output_directory_path.resolve(notes_filename + getFileSuffix()));
-
-        try (final OutputStreamWriter writer = new OutputStreamWriter(stream)) {
+        try (final OutputStreamWriter writer = new OutputStreamWriter(getOutputStream(race_name_for_filenames, "processing_notes", year))) {
             writer.append(race.getNotes().toString());
         }
     }
diff --git a/src/main/java/org/grahamkirby/race_timing/relay_race/RelayRaceOutputCSV.java b/src/main/java/org/grahamkirby/race_timing/relay_race/RelayRaceOutputCSV.java
index 40219fe..706aaec 100644
--- a/src/main/java/org/grahamkirby/race_timing/relay_race/RelayRaceOutputCSV.java
+++ b/src/main/java/org/grahamkirby/race_timing/relay_race/RelayRaceOutputCSV.java
@@ -25,18 +25,13 @@
 import org.grahamkirby.race_timing.common.output.ResultPrinterCSV;
 
 import java.io.IOException;
-import java.io.OutputStream;
 import java.io.OutputStreamWriter;
-import java.nio.file.Files;
 import java.util.List;
 
 import static org.grahamkirby.race_timing.common.Normalisation.format;
 import static org.grahamkirby.race_timing.common.Race.LINE_SEPARATOR;
-import static org.grahamkirby.race_timing.common.Race.SUFFIX_CSV;
 
-public class RelayRaceOutputCSV extends RaceOutputCSV {
-
-    private final String detailed_results_filename = STR."\{race_name_for_filenames}_detailed_\{year}";
+class RelayRaceOutputCSV extends RaceOutputCSV {
 
     private static final String OVERALL_RESULTS_HEADER = "Pos,No,Team,Category,";
 
@@ -63,9 +58,7 @@ protected ResultPrinter getOverallResultPrinter(final OutputStreamWriter writer)
 
     void printDetailedResults() throws IOException {
 
-        final OutputStream stream = Files.newOutputStream(output_directory_path.resolve(detailed_results_filename + SUFFIX_CSV));
-
-        try (final OutputStreamWriter writer = new OutputStreamWriter(stream)) {
+        try (final OutputStreamWriter writer = new OutputStreamWriter(getOutputStream(race_name_for_filenames, "detailed", year))) {
 
             printDetailedResultsHeader(writer);
             printDetailedResults(writer);
@@ -91,11 +84,8 @@ private void printDetailedResults(final OutputStreamWriter writer) throws IOExce
 
         final ResultPrinter printer = new DetailedResultPrinter(race, writer);
 
-        for (final PrizeCategoryGroup group : race.prize_category_groups) {
-
-            final List<RaceResult> results = race.getOverallResults(group.categories());
-            printer.print(results);
-        }
+        for (final PrizeCategoryGroup group : race.prize_category_groups)
+            printer.print(race.getOverallResults(group.categories()));
     }
 
     //////////////////////////////////////////////////////////////////////////////////////////////////
@@ -108,9 +98,7 @@ void printLegResults() throws IOException {
 
     private void printLegResults(final int leg) throws IOException {
 
-        final OutputStream stream = Files.newOutputStream(output_directory_path.resolve(STR."\{race_name_for_filenames}_leg_\{leg}_\{year}.csv"));
-
-        try (final OutputStreamWriter writer = new OutputStreamWriter(stream)) {
+        try (final OutputStreamWriter writer = new OutputStreamWriter(getOutputStream(race_name_for_filenames, STR."leg_\{leg}", year))) {
             printLegResults(writer, leg);
         }
     }
diff --git a/src/main/java/org/grahamkirby/race_timing/relay_race/RelayRaceOutputHTML.java b/src/main/java/org/grahamkirby/race_timing/relay_race/RelayRaceOutputHTML.java
index a6ded13..f48ffbf 100644
--- a/src/main/java/org/grahamkirby/race_timing/relay_race/RelayRaceOutputHTML.java
+++ b/src/main/java/org/grahamkirby/race_timing/relay_race/RelayRaceOutputHTML.java
@@ -26,7 +26,6 @@
 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.OutputStreamWriter;
-import java.nio.file.Files;
 import java.nio.file.StandardOpenOption;
 import java.util.List;
 
@@ -49,7 +48,7 @@ public void printCombined() throws IOException {
 
         super.printCombined();
 
-        final OutputStream stream = Files.newOutputStream(output_directory_path.resolve(combined_results_filename + getFileSuffix()), StandardOpenOption.APPEND);
+        final OutputStream stream = getOutputStream(race_name_for_filenames, "combined", year, StandardOpenOption.APPEND);
 
         try (final OutputStreamWriter writer = new OutputStreamWriter(stream)) {
 
@@ -87,7 +86,7 @@ protected ResultPrinter getPrizeResultPrinter(final OutputStreamWriter writer) {
 
     void printDetailedResults() throws IOException {
 
-        final OutputStream stream = Files.newOutputStream(output_directory_path.resolve(detailed_results_filename + getFileSuffix()));
+        final OutputStream stream = getOutputStream(race_name_for_filenames, "detailed", year);
 
         try (final OutputStreamWriter writer = new OutputStreamWriter(stream)) {
             printDetailedResults(writer);
@@ -109,7 +108,7 @@ void printLegResults() throws IOException {
 
     private void printLegResults(final int leg) throws IOException {
 
-        final OutputStream stream = Files.newOutputStream(output_directory_path.resolve(STR."\{race_name_for_filenames}_leg_\{leg}_\{year}.html"));
+        final OutputStream stream = getOutputStream(race_name_for_filenames, STR."leg_\{leg}", year);
 
         try (final OutputStreamWriter writer = new OutputStreamWriter(stream)) {
             printLegResults(writer, leg);
diff --git a/src/main/java/org/grahamkirby/race_timing/relay_race/RelayRaceOutputText.java b/src/main/java/org/grahamkirby/race_timing/relay_race/RelayRaceOutputText.java
index e64949d..fde1ccf 100644
--- a/src/main/java/org/grahamkirby/race_timing/relay_race/RelayRaceOutputText.java
+++ b/src/main/java/org/grahamkirby/race_timing/relay_race/RelayRaceOutputText.java
@@ -17,15 +17,14 @@
 package org.grahamkirby.race_timing.relay_race;
 
 import org.grahamkirby.race_timing.common.*;
-import org.grahamkirby.race_timing.common.output.ResultPrinterText;
 import org.grahamkirby.race_timing.common.output.RaceOutputText;
 import org.grahamkirby.race_timing.common.output.ResultPrinter;
+import org.grahamkirby.race_timing.common.output.ResultPrinterText;
 import org.grahamkirby.race_timing.single_race.SingleRace;
 
 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.OutputStreamWriter;
-import java.nio.file.Files;
 import java.time.Duration;
 import java.util.*;
 import java.util.stream.Stream;
@@ -36,8 +35,6 @@
 
 class RelayRaceOutputText extends RaceOutputText {
 
-    private String collated_times_filename;
-
     RelayRaceOutputText(final RelayRace results) {
 
         super(results);
@@ -45,17 +42,10 @@ class RelayRaceOutputText extends RaceOutputText {
 
     //////////////////////////////////////////////////////////////////////////////////////////////////
 
-    @Override
-    protected void constructFilePaths() {
-
-        super.constructFilePaths();
-        collated_times_filename = STR."\{race_name_for_filenames}_times_collated_\{year}";
-    }
-
     @SuppressWarnings("IncorrectFormatting")
     void printCollatedResults() throws IOException {
 
-        final OutputStream stream = Files.newOutputStream(output_directory_path.resolve(STR."\{collated_times_filename}.txt"));
+        final OutputStream stream = getOutputStream(race_name_for_filenames, "times_collated", year);
 
         try (final OutputStreamWriter writer = new OutputStreamWriter(stream)) {
 
diff --git a/src/main/java/org/grahamkirby/race_timing/series_race/tour/TourRaceOutputHTML.java b/src/main/java/org/grahamkirby/race_timing/series_race/tour/TourRaceOutputHTML.java
index a06e66b..e56d960 100644
--- a/src/main/java/org/grahamkirby/race_timing/series_race/tour/TourRaceOutputHTML.java
+++ b/src/main/java/org/grahamkirby/race_timing/series_race/tour/TourRaceOutputHTML.java
@@ -31,7 +31,6 @@
 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.OutputStreamWriter;
-import java.nio.file.Files;
 import java.util.Collection;
 import java.util.List;
 
@@ -70,7 +69,7 @@ private void printIndividualRaceResults(final int race_number) throws IOExceptio
 
         if (individual_race != null) {
 
-            final OutputStream race_stream = Files.newOutputStream(output_directory_path.resolve(STR."\{race_name_for_filenames}_race\{race_number}_\{year}\{getFileSuffix()}"));
+            final OutputStream race_stream = getOutputStream(race_name_for_filenames, STR."race\{race_number}", year);
 
             try (final OutputStreamWriter writer = new OutputStreamWriter(race_stream)) {