Cavs guard's postseason kaput? Gibson has separated shoulder

Daniel Gibson, overcome by the pain of a shoulder injury late in the Cavs' Game 5 loss in Boston, is out for the rest of the playoffs. Elsa/Getty Images

INDEPENDENCE, Ohio -- Cavaliers point guard Daniel Gibson has a separated left shoulder and will miss Cleveland's Game 6 against the Boston Celtics.

Gibson, one of the Cavs' best perimeter shooters, left in pain early in the fourth quarter Wednesday night following a collision and did not return.

The team said an MRI revealed a first-degree separation and estimated he would miss one or two weeks.

The Cavaliers trail 3-2 in the best-of-seven series and face possible elimination on Friday night. They'll miss Gibson, who emerged as a star Game 6 of last year's Eastern Conference finals when he made five 3-pointers and scored 31 points -- 25 in the second half -- as the Cavaliers closed out the Detroit Pistons.

"We know it's a win-or-go-home situation. We've got to approach it that way," LeBron James said after Wednesday night's loss. "We're a very good team at home. But a LeBron James team is never desperate."