Yankees manager Joe Girardi confirmed Miller’s injury to reporters Wednesday. 

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Miller has 17 saves in 26 appearances this season. He has struck out 43 batters in 26 1/3 innings while compiling a 1.03 ERA and 0.68 WHIP. Miller is in his 10th MLB season, but his first with the Yankees after signing a four-year, $36 million contract last December.

The Yankees will use right-hander Dellin Betances in the closer role while Miller is out. Betances is 4-0 this year with an 0.28 ERA while serving as Miller’s primary setup man. He has allowed one earned run in 32 1/3 innings. He has three career saves, two this year.