Cristiano Ronaldo knocks woman out with ball during pregame warmups

Cristiano Ronaldo might have to register his leg as a deadly weapon.

The Manchester United superstar took an errant penalty kick during warmups for the team’s Champions League matchup against BSC Young Boys of Switzerland, which flew over the crossbar — and struck a female steward directly in the back of the head.

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The steward lay on the ground for several moments, and Ronaldo immediately rushed over to assist her.

After remaining on the ground for a few moments, with security staff and Ronaldo perched nearby, she was able to return to her feet.

Cristiano Ronaldo apologizes after he accidentally shot a ball at a steward’s head.Getty Images

As a show of good faith, Ronaldo gifted her with a jersey once she had recovered.

The steward poses with the jersey she received from Cristiano Ronaldo.Getty Images

Ronaldo took a much more accurate shot during the game, putting United up 1-0 in the 13th minute. However, the Young Boys scored two goals, and the English team dropped their first Champions League game with Ronaldo on the roster.