Thunder forward and defensive specialist Serge Ibaka will miss the rest of the NBA playoffs because of a left calf injury.
Ibaka underwent an MRI on Friday (local time), one day after Oklahoma City eliminated the Los Angeles Clippers and advanced to the Western Conference finals against the Spurs.
Game 1 is Monday night (local time) in San Antonio.
Ibaka was injured during the third quarter of Thursday night's win.
Ibaka's athletic ability and mid-range jumper have been keys for the team.
He averaged 12.2 points, 7.3 rebounds and 2.2 blocks in 13 postseason games.
During the 2013-14 regular season, he notched career-highs with 15.1 points and 8.8 rebounds while leading the league in total blocks for the fourth consecutive season with 219.
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