While spectators and prognosticators pay attention to this Tour's epic climbs that will likely determine the GC winner, another battle is not so quietly taking place for the fastest man on pavement.
Last year's Sagan-proofing of the points classification, which awarded more points to a stage winner, had little effect on the race's outcome, as Peter Sagan still wore green to Paris.
Will Sagan ride his way to a fifth straight green jersey? Or will one of his many rivals put an end to one of modern cycling's greatest runs?
Here are the top four contenders to watch as they race for green jersey glory.