First pitch is scheduled for 9:40 p.m. ET (6:40 p.m. PT)
Venue: T-Mobile Park, Seattle, Washington
This AL West divisional series opener brings the Houston Astros to T-Mobile Park for the first of four games against the struggling Seattle Mariners. The Astros arrive after a rough road stretch, while the Mariners hope to snap a lengthy skid in front of their home crowd at the retractable-roof ballpark.
Weather Updates
Game-time conditions at T-Mobile Park forecast temperatures around 67°F with partly to mostly cloudy skies, light winds (3-4 mph), and humidity near 49%. Precipitation probability sits low at 3-16%, making a rain delay unlikely and favoring a full nine innings under the open (or partially open) roof. April evenings in Seattle are typically cool and comfortable for baseball with minimal wind impact on fly balls.
Injury Report
Houston Astros:
OF Zach Dezenzo (10-day IL, elbow sprain)
RP Josh Hader (15-day IL, left biceps tendinitis)
SP Hunter Brown (15-day IL, Grade 2 right shoulder strain)
SP Cristian Javier (day-to-day, right shoulder tightness – exited April 8 start early)
CF Jake Meyers (day-to-day, lower back tightness)
SS Carlos Correa (day-to-day, illness – probable for tonight)
Seattle Mariners:
OF Victor Robles (10-day IL, right pectoral strain)
INF/OF Miles Mastrobuoni (10-day IL, calf strain – on rehab assignment)
SP Bryce Miller (15-day IL, oblique strain)
SP Logan Evans (60-day IL, Tommy John surgery – out for season)
RP Carlos Vargas (60-day IL, lat strain)
Both teams are missing key arms and some positional depth, but tonight’s starters are confirmed and healthy. The Astros’ bullpen and lineup flexibility could be tested more on the road.
Player Matchups & Probable Pitchers
HOU: RHP Tatsuya Imai (1-0, 4.32 ERA)
The Japanese right-hander has been solid in limited early action (8.1 IP, 13 K, 7 BB). Strong strikeout stuff and a 1.56 WHIP, but he’ll face a Mariners lineup desperate for offense.
SEA: RHP Emerson Hancock (1-1, 0.71 ERA)
Hancock has been outstanding early (low WHIP around 0.55, 14 K in limited IP). Elite command and ground-ball tendency make him a tough matchup for Houston’s power-heavy bats.
Key Offensive Matchups:
Astros bats vs. Hancock: Houston ranks higher in runs scored (~6.1 RS/G) with contributors like Jose Altuve, Yordan Alvarez (if active), Alex Bregman, and Kyle Tucker providing veteran pop and on-base skills. They’ll test Hancock’s early dominance.
Mariners bats vs. Imai: Seattle’s offense has struggled (3.08 RS/G), relying on Julio Rodríguez, Cal Raleigh, and others to generate sparks. They hit righties decently but rank low in team OPS and have been shut down lately.
Recent Team Forms
Astros (2-8 in last 10, 1-5 on current road trip): Houston has dropped three straight to Colorado (including blowouts) and lost in extra innings to the Athletics. Pitching has been inconsistent on the road, and the bullpen is taxed.
Mariners (roughly 2-8 in recent stretch, 0-5 last 5): Seattle has been shut out or held to low totals in several recent losses (including to Texas). Offense is anemic, but the pitching staff (led by Hancock) has kept them competitive in spots.
Series History
The teams meet for the first game of a four-game set (Astros lead the season series 0-0 entering tonight). Historically, the Mariners have had mixed results at home vs. Houston in recent AL West play, with low-scoring affairs common at T-Mobile Park. Last season’s matchups featured competitive pitching duels.
Betting Trends
Unders have hit frequently in Mariners home games and Astros road contests.
Other notes: Astros are 2-5 SU in last 7 road games vs. SEA; Mariners are strong favorites at home but 0-5 ATS recently.
Game Odds
Houston Astros 7.5
Seattle Mariners – 143
Odds Courtesy of Sports Odds Direct as of Thursday, April 9, 2026
