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Probable Pitchers
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- T. Bibee CLE
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- L. Gilbert SEA
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Schedule
| Preseason | |
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| Regular season | |
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Thu, Mar 26
10:10 pm
GDTV
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Sat, Mar 28
9:40 pm
GDTV
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Sun, Mar 29
7:20 pm
PEAC
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Mon, Mar 30
9:40 pm
MRTV
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1:50MLB Opening Day Buy Or Sell: Mariners Team Friction Could Ruin World Series Hopes
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1:27Teams Not Afraid Of The Dodgers: The Mariners
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0:58Pick to Win World Series: Mariners Reach Mountaintop
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1:082026 MLB Season: Prediction To Win The American League
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11:222026 MLB Bold Predictions
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10:19Best & Worst Picks In Each Round!
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1:02Spring Training Highlights: Mariners at Dodgers (2/23)
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1:29Grade The Three Way Deal Involving Brendan Donovan
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8:27Top-12 Starting Pitchers for 2026!
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1:05How Josh Naylor Signing Impacts First Base Market
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1:03Examining Mariners Approach For Rest Of Offseason
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1:35Mariners To Re-Sign Josh Naylor To 5-Year Deal
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10:43Early 2026 Outfield Rankings Part 1! How High on Buxton & Springer?
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1:32Cal Raleigh: MLBPA 2025 Players Choice Player Of The Year
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11:11Cal Raleigh Joins CBS Sports HQ
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1:59Cal Raleigh Left On Deck In The 9th After JRod Strikeout
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1:51Blue Jays Sound Off After Advancing To World Series
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1:58The Mariners One Costly Mistake In Game 7
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1:55Mariners Sound Off After Game 7 Loss
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1:37Springer's Late Game Heroics Lift Blue Jays To World Series
Top Mariners News
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Mariners' Luis Castillo: Opening season as fifth starter
Castillo is slated to make his first start during the Mariners' fifth game of the season Monday versus the Yankees at T-Mobile Park, Adam Jude of The Seattle Times reports.
Emerson Hancock is the Mariners' de facto fifth starter while stepping into the rotation in place of the injured Bryce Miller (oblique), but he'll end up taking the hill for Seattle's fourth game Sunday versus Cleveland while Castillo moves to the back of the schedule. The rotation setup is likely just a means to get Castillo some extra rest after he started the Mariners' spring training finale Monday in San Diego. Castillo covered five innings and tossed 76 pitches in that outing, so he should be ready to handle a relatively normal workload in his 2026 debut.
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Mariners' Andrew Knizner: Loses 40-man spot
The Mariners designated Knizner for assignment Tuesday.
Knizner will cede his spot on 40-man roster to Mitch Garver, who beat him out for the No. 2 catcher job coming out of spring training. A lifetime .211/.281/.316 hitter over parts of seven MLB seasons, Knizner could attract interest on the waiver wire from other teams looking to upgrade their backup catcher spot ahead of Opening Day.
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Mariners' Leo Rivas: Will be Opening Day shortstop
Rivas is slated to start at shortstop for the Mariners on Opening Day after J.P. Crawford (shoulder) was placed on the 10-day injured list, Adam Jude of the Seattle Times reports.
The Mariners might have considered top prospect Colt Emerson to play shortstop if Crawford's absence was going to be an extended one, but he's expected back in a couple weeks. As such, the club will turn to the defensively gifted Rivas at shortstop. Rivas has a good eye at the plate, but he's unlikely to be worthy of a roster spot in fantasy leagues even while playing regularly.
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Mariners' Miles Mastrobuoni: Sidelined with calf strain
The Mariners placed Mastrobuoni (calf) on the 10-day injured list Wednesday.
Mastrobuoni strained his right calf while playing for Team Italy in the World Baseball Classic two weeks ago. He'll be eligible to return April 1, but the utility player figures to require a bit more down time than that.
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Mariners' J.P. Crawford: Goes on IL with shoulder injury
The Mariners placed Crawford (shoulder) on the 10-day injured list Wednesday.
Crawford has battled nagging right shoulder inflammation since the start of spring training and was given a cortisone injection last week. He is eligible for activation April 1 and has expressed optimism that he could return within the next couple weeks, per Adam Jude of the Seattle Times. Leo Rivas will fill in at shortstop for the Mariners while Crawford is shelved.
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Mariners' Bryce Miller: Shelved by oblique strain
The Mariners placed Miller on the 15-day injured list Wednesday due to a left oblique strain.
Miller strained his left oblique in late February and was limited to just one appearance during Cactus League play. He's thrown a pair of bullpen sessions recently and hasn't encountered any known setbacks, but the righty will require several weeks to be build back up, per Adam Jude of The Seattle Times. Emerson Hancock will occupy a spot in the Mariners rotation until Miller is ready to make his 2026 debut.
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Mariners' Mitch Garver: Added to roster
The Mariners selected Garver's contract from Triple-A Tacoma on Wednesday.
Garver re-signed with Seattle as a non-roster invitee after camp opened and beat out Jhonny Pereda and Andrew Knizner for the backup catcher job. The 35-year-old will see some starts at catcher on days Cal Raleigh serves as the designated hitter, but Garver's playing time should be fairly limited.
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Mariners' Luis Castillo: Strong finish to spring slate
Castillo allowed one run on four hits and a walk while striking out five across five innings in Monday's matchup with the Padres.
Castillo finished Cactus League play on a high note, allowing three runs over nine innings in his final two outings. It's certainly an encouraging development after the right-hander struggled to a 27.00 ERA in his first three appearances (six innings). Castillo, who's posted a sub-4.00 ERA in each of his last seven seasons, made a team-high 32 regular-season starts in 2025, finishing with a 3.54 ERA, 1.18 WHIP and 162:46 K:BB across 180.2 innings.
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Mariners' Bryan Woo: Reaches six innings in final tuneup
Woo allowed one run on three hits while striking out four without a walk over six innings in Sunday's Cactus League win over the White Sox. "Extremely locked in, extremely focused, the intent he has on the mound is next to none, and it's really a big part of what he does," manager Dan Wilson said after the game regarding Woo's performance, Ryan Divish of the Seattle Times reports.
Divish notes that Woo induced 11 whiffs, including six with his four-seam fastball, on 73 total pitches (52 strikes) in his fourth and final start of spring training. The pitch count sets Woo up for a relatively normal workload in his 2026 regular-season debut this weekend at home against the Guardians. He is not the ace in Seattle, and in fact it appears he will slot in behind both Logan Gilbert and George Kirby, but Woo has a case as a fantasy ace after a top-five finish among fantasy starting pitchers in his age-25 breakout last season.
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Mariners' Yosver Zulueta: Misses cut
Zulueta was optioned to Triple-A Tacoma on Sunday.
Zulueta was traded to Seattle from the Reds in January, and he was able to produce a 3.86 ERA and 1.29 WHIP with 10 strikeouts over seven innings in eight appearances with the Mariners during spring training. The right-hander struggled to a 6.14 ERA over 7.1 innings in seven appearances out of the bullpen with Cincinnati in 2025. He'll look to get into a groove at Tacoma in an attempt to get a shot with the Mariners' major-league roster this season.
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Mariners' Cole Wilcox: Sent down Sunday
Wilcox was optioned to Triple-A Tacoma on Sunday.
Wilcox appeared in eight games with the Mariners during spring training, producing a 4.32 ERA and 1.20 WHIP with 11 strikeouts over 8.1 innings. The right-hander was traded to Seattle in November after making his major-league debut with the Rays in 2025. Wilcox will now look to impress with Tacoma in an attempt to get a shot with Seattle's major-league roster down the road this year.
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Mariners' Jhonny Pereda: Headed to Tacoma
Pereda was optioned to Triple-A Tacoma on Sunday.
Pereda was traded from the Twins to Seattle in January, and he was able to participate in spring training with the big-league club. The catcher batted .200 with a run scored and a stolen base over 25 at-bats in 15 contests. He'll now head to Tacoma ahead of the 2026 campaign.
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Mariners' Connor Joe: Sent to minor-league camp
Joe was reassigned to minor-league camp Sunday.
Joe joined the Mariners at spring training as a non-roster invitee after signing a minor-league contract with the team in February. The 33-year-old produced an impressive .362 average with a home run, six RBI and nine runs scored over 47 at-bats over 19 contests. Joe definitely showed that he still has some life left in his bat after a disappointing 2025 campaign, and he's now on track to begin the year with Triple-A Tacoma.
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Injuries
| Player | Injury |
|---|---|
| B. Miller SP Bryce Miller SP | Oblique |
| J. Crawford SS J.P. Crawford SS | Shoulder |
| M. Mastrobuoni 3B Miles Mastrobuoni 3B | Calf |
| L. Evans RP Logan Evans RP | Elbow |
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