avoid reducing windward distance traveled in case a competitor is at the mark rounding and has a negative windward distance traveled for the current leg

java/com.sap.sailing.domain/src/com/sap/sailing/domain/ranking/AbstractRankingMetric.java

@@ -533,8 +533,12 @@ public abstract class AbstractRankingMetric implements RankingMetric {
                             if (legWindwardDistance.compareTo(windwardDistanceFromLegStart) < 0) {
                                 d = d.add(legWindwardDistance);
                             } else {
+                                // if the competitor is currently at the mark rounding, the windward distance within the leg may
+                                // be negative; don't reduce the distance in this case
+                                if (windwardDistanceFromLegStart.getMeters() > 0) {
                                     d = d.add(windwardDistanceFromLegStart);
                                 }
+                            }
                             break;
                         } else {
                             d = d.add(trackedLeg.getWindwardDistance(cache));