新闻来源 : ATP官网
http://www.atpworldtour.com/en/news/infosys-roger-federer-may-2016
Double faults are a necessary evil of our game.
双误在比赛中是绝对无益的
Missing a second serve tends to sting a lot more than missing a forehand or a
backhand, especially if the double fault occurs at an influential moment
during a match. Double faulting on break point represents the worst timing,
but it still happens even at the elite level of our sport.
一个二发失误比正拍或反拍失误还要致命，特别是在一场比赛的关键时刻。
如果在破发点出现双误，那真的是最糟糕的时机，但它却在顶尖的赛场上持续发生著。
An Infosys ATP Beyond The Numbers analysis of double faults, and their timing
in a match, illuminates an incredible strength of former World No. 1 Roger
Federer -– the ability to get his second serve in the box under pressure.
ATP分析了比赛当中双误的数据，发现前世界第一 Roger Federer有着不可置信的实力 -
在压力下把二发发进的能力。
From the beginning of the 2015 season up to Roland Garros this year, Federer
was committing a double fault on break point only once every 22 matches. That
is head and shoulders above his peers in the Elite Eight, and speaks equally
to his fluent, graceful motion as well as the mental fortitude required to
get the ball in play with the match on the line.
从2015季初一直到今年法网前，Federer平均每22场比赛才会出现一次破发点的双误。
这在世界前八当中是一个非常优秀的数字，用优雅流畅以及毅力来完成比赛。
选手 平均发生破发点双误的场数
Federer 21.8
Djokovic 11.4
Nishikori 7.4
Wawrinka 6.5
Nadal 5.5
Murray 5.2
Tsonga 4.3
Berdych 4.0
费拔太神拉~~~~~
想不到这个数据领先大魔王这么多
下面来有几段跟这个主题关系就比较小
有兴趣的话可以自行去看原文~
ps.最后一句不太会翻orz