Houston Astros vs Seattle Mariners — Apr 13, 2026 | AI Prediction & Stats

George Kirby’s elite strike-throwing sets the tone. He mixes front-door two-seamers and elevated four-seamers to carve through the top of the Houston order, allowing just one mistake—a fourth-inning solo blast by Yordan Álvarez. Kirby exits after six innings on 86 pitches with a 5-1 lead. Mike Burrows looks rusty after a 12-day layoff and the tight Seattle strike zone doesn’t help. A second-inning rally sparked by Brendan Donovan’s line-drive single and Cole Young’s gap double plates the game’s first run. In the fourth, Donovan yanks a first-pitch curve into the right-field corner for a two-run double, chasing Burrows after 3.2 frames. Houston’s bullpen is stretched thin by recent injuries; Christian Roa and Bryan Abreu patch together the middle innings but issue three walks in the fifth, gifting Seattle an extra tally on Cal Raleigh’s sac fly. The Mariners tack on an insurance run in the eighth when Randy Arozarena ambushes a first-pitch slider from Enyel De Los Santos and legs out a hustle double, later scoring on Dominic Canzone’s sharp single. Seattle’s relief trio—Matt Brash, José Ferrer and Andrés Muñoz—locks it down. Brash’s sweeping slider strands two in the seventh, Muñoz touches 101 mph to finish the ninth, and only a tiring Ferrer yields a Cam Smith RBI single in the eighth. Key factors behind the prediction • Starting pitching edge: Kirby’s command versus Burrows’ spot-start uncertainty. • Houston injuries: a banged-up rotation and Jeremy Peña’s knee leave the Astros thin up the middle. • Momentum: Seattle on a three-game roll against Houston; Astros mired in a five-game skid. • Bullpen freshness: Seattle’s high-leverage arms are rested after Kirby’s seven-inning gem Sunday, while Houston’s pen has soaked up 15+ innings the past three days. Result: Mariners 5, Astros 2—Seattle completes the four-game sweep and nudges back to .500.