Round 1: Federer vs. Elofsson
Who is the best athlete in the world? Vote in this first-round matchup!
Roger FedererTennis player
Per ElofssonCross-country skiing
On the list because he's the No. 1-ranked player in the world, combining a powerful serve with quickness and agility.
On the list because he's a three-time world champion, two-time World Cup overall champion and has enough lung capacity to blow up the Goodyear blimp.
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