Leiter will undergo surgery Tuesday to address a right hip impingement and is expected to miss the remainder of the season, Martin Gallegos of MLB.com reports.
Leiter landed on the 15-day injured list Tuesday due to the injury, which he'll opt to treat with a procedure rather than rest and rehab. The 35-year-old righty will close out the season with a 4.28 ERA, 1.31 WHIP, five holds and four saves across 33.2 innings.