unforced error meaning in Chinese

非受迫性失误

Actually , i mean , i had so many unforced errors , i just was struggling to keep the ball in today
我在今天的比赛中非受迫性失误太多，球总是出界，这种失误怎么也纠正不过来。
“ you have to play smart and be patient with her , ” kournikova said . “ but i made a few unforced errors because i tried to go for too much
库尔尼科娃说： “与她比赛你要机智、冷静，可我犯了一些情有可原的错误，因为我太执著了。 ”
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。