Mitch Keller: Everything you need to know

Keller (4-1) earned the win over Arizona on Thursday, allowing two runs on four hits and two walks while striking out four batters over six innings. Keller trailed 2-1 after three innings, but he finished his outing with a trio of scoreless frames. As usual this season, the right-hander wasn't overpowering -- he managed a modest eight whiffs and four punchouts -- but that didn't prevent him from picking up his fourth victory and sixth quality start through eight outings. Keller's advanced metrics don't pop off the page, but he's getting the job done with a 2.87 ERA, 1.04 WHIP and 35:14 K:BB across 47 frames on the season. He'll draw a promising matchup in what's scheduled to be a home matchup versus Colorado his next time out.

Keller (3-1) picked up the win Friday, allowing one run on three hits and a walk over seven innings in a 9-1 victory over the Reds. He struck out six. The veteran righty continues to roll, delivering his fifth quality start of the season on 104 pitches (71 strikes) and tying his season high in strikeouts. Keller has given up more than three runs in a start only once so far in 2026, and he'll take a 2.85 ERA, 1.05 WHIP and 31:12 K:BB through 41 innings into his next outing, which is set to come next week on the road in Arizona.

Keller didn't factor into the decision Saturday against the Brewers, allowing three runs on five hits and two walks while striking out six across five innings. Keller tossed 60 of his 93 pitches for strikes and ended just three outs away from recording a quality start -- a feat he's accomplished in four of his six outings in 2026. The six strikeouts were also a season-high mark for Keller, who delivered a strong outing considering the history he has against some of the Brewers' hitters. Keller has a 3.18 ERA across six outings and 34.0 innings this season, and he should make his next start over the upcoming weekend at home against the Reds.