Rebecca J. Rosen, for The Atlantic:
Over the weekend sprinters Allyson Felix and Jeneba Tarmoh finished so closely — both coming in at 11.068 seconds — that no amount of high-speed photography (the cameras shoot 3,000 frames per second) can discern who placed third and who came in fourth. There are three spots on the US Olympic team for this event.
Insane. This is the first known instance of a perfect tie with modern recording equipment in any sport.