Pittsburgh recalled Sisk from Triple-A Indianapolis on Friday.
The southpaw spent just over two weeks in Indianapolis before rejoining the Pirates in St. Louis for their series opener Friday. With the big-league club this season, the 29-year-old owns a 2.66 ERA, 1.25 WHIP, 47:18 K:BB and five holds over 40.2 innings. Pittsburgh optioned Noah Murdock to Triple-A to clear a spot in the bullpen for Sisk.