根据 ATP记者统计观察，
前三轮的比赛中花最多时间给球迷签名的选手就是费大爷.
三场比赛下来一共花了 15:33给场边球迷签名，平均一人用 3.6秒的时间
(换句话说约签了 260人次)
这统计不包括练习时 Rogi通常都花十分钟左右帮场边观看的球迷签名。
当他的球迷真幸福啊!
Player Total Time Signing Avg. Time Per Autograph
Roger Federer 15:33 3.6 seconds
Novak Djokovic 12:27 2.6 seconds
Milos Raonic 7:42 2.6 seconds
Andy Murray 4:15 2.5 seconds
签名最快的是 John Isner, 平均一人只要 1.8秒。
http://www.atpworldtour.com/News/Tennis/2014/09/36/US-Open-Federer-Autographs.aspx
If you’re a fan at the US Open, whose autograph have you got the best chance
of securing for a priceless souvenir? Jim Chairusmi of the Wall Street
Journal has been doing his homework and uncovered that one of the greatest
players of all time, Roger Federer, is also one of the best at signing for
fans.
Watching close to 60 matches through the third round at Flushing Meadows,
Chairusmi observed Federer spending a total of 15:33 minutes signing
autographs post match, including more than eight minutes signing after
beating Marcel Granollers in the third round, but not factoring in the nine
minutes the Swiss spent signing after a practice session Monday.
World No. 1 Novak Djokovic came in behind Federer as 12:27 minutes total time
signing post match, but the Serb actually signed more autographs than Federer
(292 to 258) with a faster signature (2.6 seconds per autograph compared to
3.6 seconds for Federer).
American No. 1 John Isner, it transpires, is the fastest at signing his name,
taking on average 1.8 seconds per autograph.