The referee signalled a foul.

裁判鸣哨示意犯规。

《牛津词典》

If a contestant injures himself while attempting to foul his opponent, the referee will not take any action in his favor.

如果参赛者在企图对对手犯规时弄伤了自己，裁判将不会采取对他有利的行动。

youdao

He said: "I was playing in my Sunday League team once and the referee accused me of giving him a false name, after I made a minor foul on another player."

他说：“在一次周日联盟队比赛中，我对另一名球员犯了点规，裁判以为我乱报名字，还指责我。”

youdao

Green is go. And for example, in taekwondo or judo, when the referee calls a foul, all the lights will start shining" Despite the adaptations, deaf athletes do face additional hurdles.

VOA: standard.2009.09.10

Portsmouth's rearguard was severely hampered when Hreidarsson was adjudged to have impeded Vassell as he ran on to Ireland's through ball on 40 minutes, a foul which referee Andre Marriner believed merited a straight red card.

BBC: Man City 3-1 Portsmouth

With both sides falling foul of referee Rob Debney and conceding a stream of penalties at rucks and scrums the match was a stop-go, error-strewn affair from the fifth minute front-row flare-up which handed Cipriani his opening penalty.

BBC: Wasps 9-5 Northampton

The referee called a foul on the player and issued him a yellow card, triggering the player to turn and punch him, authorities said.

NPR: Utah Referee Critically Hurt By Soccer Game Punch