非受迫性失误 meaning in English

unforced error

" i just think i just really carry myself that way from the past years , just knew what i had to do , how to play well
在比赛中我的非受迫性失误很少，在比赛中也基本能按照自己的战术去打。 ”
Venus williams : i think this result is an indication that you cannot make 70 unforced errors and expect to win a match . that ' s pretty much what it is
大威：我觉得它告诉人们，你不能在比赛中犯了70个非受迫性失误后还想着要赢比赛，道理就是这么简单。
She ' s a very good player . but also i had close to 70 unforced errors . i mean , if i ' m not shooting myself in the foot like that , then i ' m going to be able to most likely be the victor
不过，在今天的比赛中我一共有大约70个非受迫性失误，我的意思是说，如果不是我自己“脚底下瓣蒜”的话，今天比赛的胜者很有可能就是我。
Roger broke the argentine five times and saved the only break point he faced . the four - time defending champion finished with 33 winners and made only 23 errors - one less than del potro
阿根廷人5次被破发，而仅有的一次机会破发费德勒的发球局都被天王挽回。技术统计，费德勒有33个净胜球，仅23次非受迫性失误，比德尔波特洛少一次。