Mitch Keller: Everything you need to know

Keller (2-1) notched the win Sunday against the Rays, allowing two runs on five hits and no walks in seven innings. He struck out five. It was perhaps a season-best performance by the right-hander, who recorded season-high figures in innings and strikeouts. Keller has done a fine job of providing length for the Pirates so far in 2026, tossing at least six innings in four of his five starts. He'll bring a strong 2.79 ERA, 1.10 WHIP and 19:9 K:BB over his first 29 frames into his next outing, which is currently projected to come against the division-rival Brewers.

Keller (1-1) took the loss Monday against the Nationals, allowing five runs on six hits and four walks with three strikeouts across four innings. Keller had turned in three straight six-inning quality starts to begin the season, so Tuesday was his first hiccup of the 2026 campaign. The Nationals attacked Keller early and often in this one, as the first five batters of the game reached base to push across three runs. CJ Abrams then swatted a solo home run off Keller in the third frame. Keller generated just seven whiffs on 90 pitches and walked four batters for the second time in four starts. The right-hander now owns a 2.86 ERA and 14:9 K:BB across 22 innings. He's slated to face the Rays at home Sunday in his next start.

Keller didn't factor into the decision in Wednesday's 8-2 loss to the Padres, allowing three hits and a walk over six scoreless innings. He struck out four. The veteran right-hander was masterful over 75 pitches (49 strikes), but manager Don Kelly elected to lift Keller to begin the seventh inning in a scoreless tie and watched his bullpen immediately implode. Keller has begun the season with three straight quality starts but has won only one of them, delivering a 1.00 ERA, 0.94 WHIP and 11:5 K:BB through 18 innings. He'll look for more run support in his next trip to the mound, which is set to come at home early next week against the Nationals.