The turning point of the match was lost the first set.

转泪点就在当我们输了第一局比赛。

youdao

But once he had lost the first set 6-0 that day, the match was never going to be his.

但是，那次他以0 - 6丢掉了第一盘，显然那场比赛并不属于他。

youdao

In the second set, she lost the first set. Match point in the second set, came back and save that, then won that second set.

李娜在第一局比赛中不敌对手，而进入第二局赛点时，则进入佳境，挽回失分，并最终赢得第二局比赛。

youdao

In the first round, Nadal lost the first set against the hard-hitting Daniel Brands.

WSJ: Rafael Nadal Calls French Open Scheduling 'a Joke'

After I lost the first set today, I tried to find that inner strength.

CNN: Nadal 'relaxed' as rivals struggle at Monte Carlo Masters

The Americans had lost the first set and appeared overmatched in the second.

WSJ: Social Media