Photo Finish

Cool photo finish from today's Tour stage... If you consider center of gravity, Sagan (bottom) probably got his over the line first, and his helmet definitely beat Greipel's. Sagan is also moving faster as he crosses the line. It's the leading edge of the front tire that matters, though, and Greipel's textbook bike throw wins the day.

For my non-racing friends, the photo-finish camera is only looking through a thin vertical slit at the finish line itself, so the horizontal direction in the photo actually represents time. That's why the wheel spokes look so odd.  It's also why I say Sagan is moving faster... He spent less time (horizontal distance in photo) in view of the camera.