If the Portland Trail Blazers pull off the upset of the L.A. Lakers, they’ll have to do it without forward Zach Collins. The Trail Blazers announced Collins will have left ankle surgery and miss the remainder of the postseason.

The injury, which is a hairline medial malleolus stress fracture of his left ankle, occurred during the Play-In game with the Grizzlies on Saturday. He missed the first two games of the first-round series with the Lakers.

Collins, 22, appeared in 11 games (all starts) for the Trail Blazers this season, averaging 7.0 points and 6.3 rebounds.