SACRAMENTO, Calif. -- Miami Heat forward LeBron James strained his right groin and aggravated a left ankle sprain in Friday's loss to the Sacramento Kings and is a game-time decision for Saturday's game against the Trail Blazers. James did, however, participate in a pregame workout.

Ray Allen (knee) is also a game-time decision, but the Heat are expecting Dwyane Wade (knee) to return after sitting out Friday's game. Chris Andersen (back) has been ruled out.

James tweaked his ankle late in the second quarter when he landed on a referee's foot after missing a contested layup. He scored 19 of his game-high 33 points in the first half but struggled with his offense in the third quarter as the Kings gradually erased a 17-point deficit in the 108-103 overtime win.

After playing 44 minutes, James said he wasn't certain when he strained his groin and was unsure whether he would play Saturday in Portland on the second night of a back-to-back set for the Heat.