MILWAUKEE - The Pirates got a boost in their bullpen on Aug. 5, and it came from a familiar arm rather than another deadline addition.
Pittsburgh activated left-hander Evan Sisk from the 15-day injured list and made him available for the game against the Milwaukee Brewers at American Family Field. To clear a spot, the Pirates optioned rookie right-hander Wilber Dotel to Triple-A Indianapolis after he threw two innings in the 4-2 loss to Milwaukee on Aug. 4.
Sisk’s return gives Pittsburgh another left-handed option at a time when the club is trying to build momentum over the final two months of the season. He had become an important part of the bullpen after being called up from Indianapolis on April 13, and he put together a strong run before landing on the injured list July 4 with left elbow inflammation.
In 32 games, Sisk posted a 2.23 ERA across 36.1 innings, striking out 43 while walking 13. He also held hitters to a .231 BAA and finished with a 1.18 WHIP.
He made two rehab appearances for Indianapolis before rejoining the Pirates, and his profile fits a staff that has leaned into matchup-based relief work. Sisk has been especially good at limiting hard contact, with an 84.6 mph average exit velocity that ranks tied for sixth-lowest in MLB this year. His 3.3% barrel rate is tied for 13th-lowest, and his 31.1% hard-hit rate is tied for 28th-lowest.
The stuff isn’t overpowering on the radar gun. Sisk averages 91.1 mph on his sinker and 91.6 mph on his four-seam fastball, but his arm slot and extension help make the ball play up. His curveball has been a real weapon, worth a +3 value on Statcast, with a .103 BAA and just a 15.0% hard-hit rate.
That kind of profile gives the Pirates flexibility. Sisk can be used earlier in games to quiet an opposing lineup and let the higher-leverage relievers handle the finish.
And there are plenty of those now. Pittsburgh’s bullpen looks very different after the deadline, when the team added four right-handers.
The Pirates brought in Camilo Doval from the New York Yankees on Aug. 1, then added Lake Bachar of the Miami Marlins, Luke Weaver of the New York Mets and Kirby Yates of the Los Angeles Angels on Aug. 3.
Doval, Weaver and Yates are expected to handle high-leverage work, while Bachar is set for middle relief and multiple innings. Yohan Ramírez and Bachar should work in middle relief, and both southpaws Mason Montgomery and Gregory Soto are slated for late-inning duties, especially Montgomery, who has been the closer.
Right-hander Carmen Mlodzinski remains in the bullpen, though he may be pushed back toward starting after Mitch Keller was placed on the 60-day injured list.
For now, the Pirates have a much deeper relief group than they did before the deadline, and Sisk is back in the mix to help shape it.
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