When 40 boats in six fleets sail one of two different courses from the same starting line using only government marks, strange things can happen. The A-Fleet Sabre started 15 minutes before our C-Fleet S2 7.9, Maniac, but its longer course put us even on the second downwind leg. We were both broad reaching on starboard, overlapped, with the Sabre to windward and needing to leave the green can to starboard. We had right of way and needed to round the same green can, but to port. With the mark quickly approaching, the Sabre was forced to do the only thing they could: slow down in order to fall clear astern, jibe behind us, and then head up hard to leave the can to starboard.