Mariners Win Series in Houston, Set Sail for Uncharted Waters with Raleigh Out
After their 8-3 victory against the Astros on Thursday, the Mariners are 7-1 with a +26 run differential against that team in 2026. They’re also 15-22 with a -7 run differential against every other team.
Thursday was something of a fulcrum for Seattle. It was the day the M’s officially sent Cal Raleigh to the 10-day IL, though this was an obvious development after his exit from Wednesday’s game with clear discomfort on the same oblique he had tweaked earlier. Mitch Garver caught Luis Castillo in the latter’s final full start for some time as the piggyback plan goes into effect the next time through the rotation. The cloud of these changes hung over the game’s activities, which saw the M’s take the bad Astros pitchers to task once more.
Brendan Donovan and Mitch Garver stood out on both sides of the ball on the day Cal Raleigh went to the IL.
There were two individual performances in particular that echoed Raleigh’s absence in a way. Garver, obviously, moved into the primary catching role upon his addition to the IL, while for Brendan Donovan, his performance was a lesson in the virtues of caution around early injuries.
Bumpy Stretch For Rotation Blocking Mariners’ Breakthrough
One of the clear strengths of the Seattle Mariners at the beginning of the 2026 season was their starting rotation. Last season, they ranked fourth in Major League Baseball in innings pitched as a starting rotation and 11th in FIP (which is ERA but factoring out fielding luck).
Bryan Woo and Luis Castillo eclipsed 180 innings pitched. Two of their starters had an ERA better than 3.50. Three of them exceeded 160 strikeouts. Four of their starters made at least 23 starts last season. Eight different players needed to make at least two starts. For context, the World Series champion Dodgers had 14 different players make multiple starts. The American League champion Blue Jays needed 11 such starters.
They had one of the strongest, most reliable rotations in baseball last year. With the same cast of characters coming into 2026, the consensus was the Mariners would be able to lean on their starting pitchers to another postseason run. However, over the last few weeks, the starting pitching has not been the strength, but the weakness of this Mariners club.
Another “Rock” Detonation Raises Rotation Questions for Mariners
In Luis Castillo’s first start of the season, he blew down the New York Yankees with basically two pitches: his four-seamer and slider.
Over the following five outings, Castillo has given up less than four runs just once and has not finished a single sixth inning. Over that time, he has given up 35 hits, 24 runs, and 20 earned runs in 22 ⅓ innings, an 8.06 ERA over that time.
Five of those innings came on Monday night in rainy Minnesota. Although in his previous four starts (also struggles of outings, though not without bad defense behind him), he had struck out 16 and issued seven walks while giving up two homers - it was all hits in the field that had sunk him - Monday’s game was bad in the so-called three true outcomes and bad in the actual result. Castillo gave up two home runs, walked two batters, and struck out three. He gave up seven hits in total and just as many runs.
The Mariners’ loss on Monday started and ended, mostly, with Castillo’s bad start. Sure, debutant Alex Hoppe’s second inning of work fell off the rails as his control waned and hitters adjusted to his slider, but the M’s had essentially decided on pushing Hoppe as far as they could to mop up the game. Sure, the Mariners offense took quite a while to wake up, but they managed to put four runs on the board.
The question has to be raised: does Castillo’s slump warrant a change in outlook for the Mariners about how to utilize him for the rest of the season?
Still-Sleepy Mariners Suffer Sixth Loss in Eight Games, Lose Series to Athletics
SEATTLE, Wash. - The M’s didn’t look much worse on Tuesday night than they had all year. The problem was that they didn’t look any better, either.
All they have shown in the first 25 games of the season has been mediocrity, inconsistency, and a gradually weakening confidence in their own abilities. The team hasn’t fallen fully off the table, but as the drudgery continues seemingly indefinitely, the phrase “right now” will become an ever more faded addendum to the phrase “this team is bad.”
Because let’s be realistic: the M’s can’t bank on a 10-plus game win streak to propel them out of the herd every year at the last moment; at some point, they need to learn how to start the regular season strong and not let up. Lifeless 5-2 losses to a sneakily threatening divisional rival can only happen so often for a team with World Series aspirations.
Luis Castillo threw a decent outing, but a high pitch count and loss of secondary control late forced him out early.
For an organization used to unearned no-decisions, Luis Castillo’s five innings of two run ball was about the platonic ideal of a no-decision.
Crawford Completes Comeback with Walk-Off Single, Mariners Best Astros 8-7
“J.P.! J.P.! J.P.!” rang out the chorus of 43,294 happy, exhausted spectators on Saturday night. Perhaps some of the Central Washington students among them (who had a special discount for the game and got some CWU-themed jerseys) were planning on continuing the night on Lower Queen Anne or Capitol Hill; the older and wiser CWU alums in the crowd were probably set to take their modes of transportation home so as to get some shuteye. All of them shared in the electricity of the evening’s end.
Mariners shortstop J.P. Crawford hadn’t been part of much of the first two weeks of the season for Seattle, nursing a shoulder injury sustained in Spring Training, and the first five games of his season saw him hit a paltry .118 over 26 plate appearances.
“I was going crazy not being able to play,” Crawford told Mariners TV’s Ryan Rowland-Smith after the game.
The Mariners shortstop had put together a 1-3 game with two walks during Seattle’s skid-breaking win on Friday, hitting leadoff with Brendan Donovan out of the lineup with an illness. But Saturday night saw him punch through a pair of massive bases-loaded singles to bookend the team’s biggest comeback of the young year.
Mariners Waste Lucky Breaks that Angels Take, Drop Series with 8-7 Loss in Extras
There’s always a strange air around games between the Angels and Mariners. Any divisional rivalry series will have an edge to it, but for the Halos and M’s, it just feels a bit different.
It probably has something to do with this: the modern Perry Minasian Angels are a mirror of the Jack Zduriencik-era Mariners: both teams stuck in the doldrums of mediocrity, wasting the career of two generational players (one Japanese superstar each), but each doing it in the opposite way.
Where the 2010s M’s caromed between 95-loss disasters and missing the playoffs by a game or two, the 2020s Angels hover around 70-75 wins year-in and year-out. The Zduriencik Mariners failed to shore up generational pitcher Felix Hernández, while the Minasian Angels have left future Hall of Fame center fielder Mike Trout out to dry. Ichiro was the first Japanese position player to light up the MLB (doing so with an old-school Wee Willie Keeler-style approach), but was nearing the last few years of his career by the time Zduriencik sent him to the Yankees. Shohei Ohtani, a much more homer-focused modern great (who, by the way, can also pitch) was a few years into his pro career before going to Anaheim.
Cal Raleigh Walks Off Yankees, Mariners Take One-Run Win Despite Missed Chances
The Mariners exited the weekend four-game set against the Guardians having scored nine more runs than their opponents but with just as many losses as wins. One-run games on Thursday and Saturday both went against the hosts, with the team seemingly figuring out how to deploy its roster in close matchups.
Seattle faced another one-run game against a 3-0 Yankees team on Monday night, and although the pitching was filthy, both the defense and offense seemed to have a bad case of the Mondays, letting several opportunities slip past at the dish and serving up a key non-out to New York in the seventh. But all’s well that ends well, and none other than Cal Raleigh knocked the winning run home in the bottom of the ninth to put all the night’s adversity behind them.
Luis Castillo notches his 1500th strikeout against Aaron Judge to cap off six shutout innings.
Mariners starter Luis Castillo isn’t the ace he once was. His once-elite grounder rate from his time with the Reds fell to around league average in his last few years with the Mariners, and his above average ratio of homers to fly balls in 2025 suggested he got on the good side of the Seattle marine layer. Still, his decline into his 30s has thus far been a graceful one, with a 3.54 ERA and 3.88 FIP last year.
Mariners Release Opening Day Roster; Crawford, Miller Notably Absent with Injury
With opening day right around the corner for the Seattle Mariners - at 7:10 p.m. Pacific on Thursday against the Guardians - the team has released its first 26-man roster for the 2026 season. The top of the depth chart, of course, is very much all over the M’s roster, from returning superstars in Cal Raleigh and Julio Rodríguez to new additions like Brendan Donovan and Jose A. Ferrer.
But of course it is not all sunshine and roses for the defending AL West champions. Longtime shortstop J.P. Crawford is out for the beginning of the year with a shoulder injury while Bryce Miller is working through an injury of his own, leaving holes in the middle infield and the back of the rotation. Leo Rivas is going to get some playing time at short in the meantime (and perhaps Cole Young might swivel
Assessing Three March Mariner Concerns Ahead of 2026 Regular Season
If the Seattle Mariners started the 2026 regular season 6-16-1 (ignore the tie), things would probably be nearing panic mode in T-Mobile Park. But given that it’s Spring Training, the record isn’t all that concerning as Opening Day begins. But from injury concerns to slow starts for stars, there are some points of worry for the M’s as the season comes into view. Just how worrying are these signs, however? Is there any meaning to be derived from them?
Concern 1: Injury questions for players up and down the roster.
Concern level: 4/10
The most-discussed injury question for the upcoming season has been Bryce Miller, and it seems likely by this point that he won’t be ready to start the regular season. The Mariners have Emerson Hancock and Cooper Criswell both available to fill in the fifth starter role - and I personally expect they’ll start with Hancock, with Criswell in the tank if Hancock again struggles as a starter - but they at least have some good indications due to both players’ performance in Spring Training. That doesn’t necessarily mean much for the regular season, especially in the top-line stats such as ERA and FIP, but the M’s have to be impressed with Hancock’s feel for the ball.
Mariners Repeat or Astros Return; Who is AL West’s Deadliest Warrior? Analyzing Division as 2026 Season Approaches
Ever since the Mariners’ dramatic September sweep on Houston’s home ground that all but sealed the division, 2026 has shaped up to be a close rematch between the two teams. Which team, if any, has the edge going into the season?
Analysis: Six Trades Mariners Could Make to Bolster Roster This Offseason
While the Mariners will be looking to the free agent market for re-signings and new additions, the trade arena offers another avenue for boosting the team in 2026. What are some of the deals they could look at closing in the winter?
Luis Castillo, Mariners Get Pulverized by Blue Jays 8-2 in Game 4, ALCS Tied at Two Games Apiece
It was another boat race for the Blue Jays on Thursday night, as Vladimir Guerrero Jr. and co. once again put on a hitting clinic to knot the series at two games apiece. Why did the Mariners once again fall victim to Toronto’s aggressive swingers?
Seven-Game Set Begins in Toronto: Pitching Matchups for Games 1-3 of M’s-Jays ALCS
The Mariners’ most important series in 24 years begins on Sunday night as the team goes on the road to Toronto. How do Seattle’s short-rested starters match up against the first three guys the Blue Jays will offer?
Final Thoughts: Mariners Found Long Path to Victory During Instant Classic Game 5
A 15-inning epic, a long-awaited return, an instant classic. The Mariners’ marathon win over the Detroit Tigers defied logic and expectations, but perhaps that was the only way such a victory could occur.
Rapid Reaction: Polanco’s Walk-Off Single Propels Mariners Past Tigers in 15-Inning Thriller to Clinch ALCS Berth
In a near five-hour baseball extravaganza with over 500 pitches thrown and 15 pitchers used, the Mariners advanced to the ALCS for the first time since 2001 with a 3-2 win over the Detroit Tigers in 15 innings thanks to a walkoff single by Jorge Polanco.
WATCH: Can Seattle Mariners Beat Tarik Skubal-led Tigers in ALDS Game 5?
The Detroit Tigers went to town on the Mariners bullpen on Wednesday afternoon, forcing a winner-take-all ALDS Game 5 in Seattle. Can the M’s defeat the best pitcher in the AL and punch their ticket to the ALCS?
Julio Rodríguez, Mariners Defy Murphy’s Law, Take Game 2 to Tie ALDS
Like almost everything involving the 2025 Mariners, it went down to the wire. Yet due to the success of some of their greatest heroes—and despite the errors of another—the M’s pulled through on Sunday night.
Five Key Moments for the Seattle Mariners Game 2 ALDS Win Over Detroit
The Seattle Mariners tied the American League Division Series with Detroit 1-1 with a 3-2 win on Sunday. What were the keys to Seattle’s important win to keep hopes of winning the ALDS alive?
WATCH: Four Notes from Dan Wilson’s Pregame Presser Ahead of ALDS Game 2
With the season at risk of slipping away and Tarik Skubal staring down the offense, Mariners manager Dan Wilson offered some comments as his team gears up for Game 2.
So It Begins: Woo-less Mariners Begin ALDS with Two Weekend Matchups
The time has finally come. October baseball is here in Seattle for just the sixth time in history as the M’s hunt their first appearance in the Fall Classic. How do the first two games match up for Seattle?
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