William Levy
may be MIA from "Dancing with the Stars" tonight ... after a "bad" injury during rehearsals!

The sexy contestant revealed he and partner Cheryl Burke could be in trouble on his Twitter page last night, writing "Just Wanted to let u know that I injured my right ankle pretty bad during rehearsal.. MRI tomorrow. I'll let u all know .. Love u all."

Levy's injury is the latest on set this season, after Melissa Gilbert's concussion and Maria Menounos' broken ribs.

Hopefully Levy (and his buff arms) will be cleared to perform tonight, as he's been near the top of the leaderboard since the beginning of the season.

Check out some of his hottest shots above.

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