2025 Seattle Mariners

2025 Seattle Mariners / Franchise: Seattle Mariners / BR Team Page

Record: 90-72, Finished 1st in AL Western Division (2025 AL)

Managed by Dan Wilson

Coaches: Manny Acta, Tony Arnerich, Trent Blank, Danny Farquhar, Perry Hill, Bobby Magallanes, Edgar Martinez, Kristopher Negron, Kevin Seitzer, Pete Woodworth and Eric Young Jr.

Ballpark: T-Mobile Park

Season Highlights

The 2025 Seattle Mariners entered the season with the ambition of finally dethroning the Houston Astros as the AL West champions, a tall order given that the Astros had won seven of the last eight division titles - the only exception being the pandemic-shortened 2020 season, and they hadn't finished first themselves since their record-setting 2021 season. There was one major cause for optimism, though which was that they had finished the 2024 season on a strong note, going 21-13 after interim manager Dan Wilson had taken over for Scott Servais on August 22nd, That performance had given Wilson the job full-time, and he could count on one of the best starting rotations in all of baseball as the foundation of a competitive team.

The problem was that the reverse side of the team's great pitching was that its hitting had been quite impotent the previous season, with a batting average of .224, the second-lowest in the AL after the woeful Chicago White Sox, and it 676 runs placing them in the league's bottom third.

The Mariners got off to a good start, with an excellent record of 16-9 in April, but then finished one game below .500 in each of the next two months. They were still in first place, albeit by just half a game, on June 1st, but a month later, on July 1st, they had a seven-game deficit behind the Astros, who were seemingly off to the races. However, they played slightly better that month, going 12-14, and then caught fire at the beginning of August, winning nine of their first ten games during that month. The seven-game deficit on July 1st was actually a low point, as it never grew any bigger, and was down to 4 1/2 games on July 31st. A 1-0 nothing win over the Baltimore Orioles on August 12th brought them back into a tie for first place, as they had managed to reel down the Astros. However, the tie lasted only that one day, as Seattle proceeded to lose seven of its next eight games, as if catching up to Houston had completely exhausted them. Luckily, the Astros were not playing great either, so the deficit was only one and a half game after that brutal stretch, but it quickly began growing again, reaching four games on September 3rd. Just when experts were starting to write them off, though, they began a winning streak on September 6th, and when it reached six games with a 7-6 win over the Los Angeles Angels on September 11th, they were back in a tie with Houston, which had just lost three consecutive series. That win over L.A. featured a walk-off sacrifice fly by Harry Ford in the 12th inning, the first career highlight for their top prospect who had made his big league debut a week earlier. It was hard finding playing time for Ford, given that their regular catcher, Cal Raleigh was still raking. Now at 53 homers, he had tied Javy Lopez's mark for most homers hit in a season while playing as a catcher, on his way to obliterating all sorts of records that season. It was a second consecutive extra-inning walk-off win for Seattle, as the night before, back-up infielder Leo Rivas had ended a 4-2 win over the St. Louis Cardinals with a walk-off homer in the 13th inning.

On September 14th, the Mariners took over sole possession of first place with an 11-2 win over the Angels combined with Houston's loss to the Atlanta Braves. In the game, Raleigh hit his 54th homer. That tied him with Mickey Mantle for most ever in a season by a switch-hitter, and it also broke Javy Lopez's record of having hit 42 homers as a catcher (11 of Cal's long balls at that point had been hit as the DH). Raleigh then kept on hitting, especially during a three-game series against the Astros at Daikin Park: the Mariners swept the series, including their lead to three games with six left to play. For his part, Raleigh upped his season's home run total to 58, annihilating the franchise record of 56 set by Ken Griffey Jr. on two occasions. He was not the only hot hitter for the team, as Dominic Canzone had a three-homer game on September 16th, while trading deadline acquisition 1B Josh Naylor had an OPS+ of 132 with 9 homers in 50 games, and had a perfect stolen base percentage, having gone 17-for-17 since the trade. The Mariners clinched a postseason berth on September 23rd, when they defeated the Colorado Rockies, 4-3. The following day, they nailed down their first AL West division title since 2001 with a 9-2 win over the hapless Rockies. And of course, Raleigh homered twice in that game to reach 60 for the season

Awards and Honors

• All-Stars: Randy Arozarena, Andrés Muñoz, Cal Raleigh, Julio Rodríguez and Bryan Woo
• AL Silver Slugger Award: Cal Raleigh (C)

Further Reading

• Daniel Kramer: "Sir Harry's walk-off sac fly moves Mariners into tie with Astros", mlb.com, September 12, 2025. [1]
• Daniel Kramer: "Statement made: 7-spot powers Mariners to massive sweep in Houston", mlb.com, September 21, 2025. [2]
• Daniel Kramer: "Mariners seize the moment, come from behind to clinch playoff berth", mlb.com, September 24, 2025. [3]
• Daniel Kramer: "Party like it's 2001! Mariners clinch first AL West crown in 24 years", mlb.com, September 25, 2025. [4]
• Will Leitch: "Is this the year the Mariners reach heights they never have?", mlb.com, May 8, 2025. [5]
• Ian Quillen: "Mariners claim share of 1st thanks to quality Kirby", mlb.com, August 13, 2025. [6]

2025 MLB season by team