The 2027 Seattle Mariners season will be the 51st season in franchise history and their 28th full season (29th overall) at T-Mobile Park, their home ballpark in Seattle, Washington. The Mariners will open the season at home against the Boston Red Sox on March 25 and finish the season on September 26 in West Sacramento, California, against the Athletics.
Offseason After finishing the 2025 season in third place in the American League West and with a losing record for the first time since 2020, manager Dan Wilson stepped down and many coaches were not retained. The team announced days after the season ended that bench coach Manny Acta, hitting coach Kevin Seitzer, infield coach Perry Hill, and first base coach Eric Young Jr. would not return in 2027.
Transactions
October 2, 2026: Claimed Michael Toglia off waivers from the Cincinnati Reds.
Regular season
Game log Legend Mariners win Mariners loss PostponementBoldMariners team member
|-style="background:#;" | 1 || March 25 || Red Sox || — || — || — || — || — || – || — |-style="background:#;" | 2 || March 26 || Red Sox || — || — || — || — || — || – || — |-style="background:#;" | 3 || March 27 || Red Sox || — || — || — || — || — || – || — |-style="background:#;" | 4 || March 28 || Red Sox || — || — || — || — || — || – || — |-style="background:#;" | 5 || March 29 || Rangers || — || — || — || — || — || – || — |-style="background:#;" | 6 || March 30 || Rangers || — || — || — || — || — || – || — |-style="background:#;" | 7 || March 31 || Rangers || — || — || — || — || — || – || — |-style="background:#;" | 8 || April 2 || @ Blue Jays || — || — || — || — || — || – || — |-style="background:#;" | 9 || April 3 || @ Blue Jays || — || — || — || — || — || – || — |-style="background:#;" | 10 || April 4 || @ Blue Jays || — || — || — || — || — || – || — |-style="background:#;" | 11 || April 5 || @ Guardians || — || — || — || — || — || – || — |-style="background:#;" | 12 || April 6 || @ Guardians || — || — || — || — || — || – || — |-style="background:#;" | 13 || April 7 || @ Guardians || — || — || — || — || — || – || — |-style="background:#;" | 14 || April 9 || Rockies || — || — || — || — || — || – || — |-style="background:#;" | 15 || April 10 || Rockies || — || — || — || — || — || – || — |-style="background:#;" | 16 || April 11 || Rockies || — || — || — || — || — || – || — |-style="background:#;" | 17 || April 13 || White Sox || — || — || — || — || — || – || — |-style="background:#;" | 18 || April 14 || White Sox || — || — || — || — || — || – || — |-style="background:#;" | 19 || April 15 || White Sox || — || — || — || — || — || – || — |-style="background:#;" | 20 || April 16 || Astros || — || — || — || — || — || – || — |-style="background:#;" | 21 || April 17 || Astros || — || — || — || — || — || – || — |-style="background:#;" | 22 || April 18 || Astros || — || — || — || — || — || – || — |-style="background:#;" | 23 || April 19 || @ Rangers || — || — || — || — || — || – || — |-style="background:#;" | 24 || April 20 || @ Rangers || — || — || — || — || — || – || — |-style="background:#;" | 25 || April 21 || @ Rangers || — || — || — || — || — || – || — |-style="background:#;" | 26 || April 22 || @ Athletics || — || — || — || — || — || – || — |-style="background:#;" | 27 || April 23 || @ Athletics || — || — || — || — || — || – || — |-style="background:#;" | 28 || April 24 || @ Athletics || — || — || — || — || — || – || — |-style="background:#;" | 29 || April 25 || @ Athletics || — || — || — || — || — || – || — |-style="background:#;" | 30 || April 26 || @ Giants || — || — || — || — || — || – || — |-style="background:#;" | 31 || April 27 || @ Giants || — || — || — || — || — || – || — |-style="background:#;" | 32 || April 28 || @ Giants || — || — || — || — || — || – || — |-style="background:#;" | 33 || April 30 || Twins || — || — || — || — || — || – || —
|-style="background:#;" | 34 || May 1 || Twins || — || — || — || — || — || – || — |-style="background:#;" | 35 || May 2 || Twins || — || — || — || — || — || – || — |-style="background:#;" | 36 || May 3 || Dodgers || — || — || — || — || — || – || — |-style="background:#;" | 37 || May 4 || Dodgers || — || — || — || — || — || – || — |-style="background:#;" | 38 || May 5 || Dodgers || — || — || — || — || — || – || — |-style="background:#;" | 39 || May 7 || @ Cubs || — || — || — || — || — || – || — |-style="background:#;" | 40 || May 8 || @ Cubs || — || — || — || — || — || – || — |-style="background:#;" | 41 || May 9 || @ Cubs || — || — || — || — || — || – || — |-style="background:#;" | 42 || May 10 || @ Angels || — || — || — || — || — || – || — |-style="background:#;" | 43 || May 11 || @ Angels || — || — || — || — || — || – || — |-style="background:#;" | 44 || May 12 || @ Angels || — || — || — || — || — || – || — |-style="background:#;" | 45 || May 14 || Pirates || — || — || — || — || — || – || — |-style="background:#;" | 46 || May 15 || Pirates || — || — || — || — || — || – || — |-style="background:#;" | 47 || May 16 || Pirates || — || — || — || — || — || – || — |-style="background:#;" | 48 || May 17 || @ Diamondbacks || — || — || — || — || — || – || — |-style="background:#;" | 49 || May 18 || @ Diamondbacks || — || — || — || — || — || – || — |-style="background:#;" | 50 || May 19 || @ Diamondbacks || — || — || — || — || — || – || — |-style="background:#;" | 51 || May 21 || Rays || — || — || — || — || — || – || — |-style="background:#;" | 52 || May 22 || Rays || — || — || — || — || — || – || — |-style="background:#;" | 53 || May 23 || Rays || — || — || — || — || — || – || — |-style="background:#;" | 54 || May 24 || Athletics || — || — || — || — || — || – || — |-style="background:#;" | 55 || May 25 || Athletics || — || — || — || — || — || – || — |-style="background:#;" | 56 || May 26 || Athletics || — || — || — || — || — || – || — |-style="background:#;" | 57 || May 28 || @ White Sox || — || — || — || — || — || – || — |-style="background:#;" | 58 || May 29 || @ White Sox || — || — || — || — || — || – || — |-style="background:#;" | 59 || May 30 || @ White Sox || — || — || — || — || — || – || — |-style="background:#;" | 60 || May 31 || @ Astros || — || — || — || — || — || – || —
|-style="background:#;" | 61 || June 1 || @ Astros || — || — || — || — || — || – || — |-style="background:#;" | 62 || June 2 || @ Astros || — || — || — || — || — || – || — |-style="background:#;" | 63 || June 3 || @ Astros || — || — || — || — || — || – || — |-style="background:#;" | 64 || June 4 || Nationals || — || — || — || — || — || – || — |-style="background:#;" | 65 || June 5 || Nationals || — || — || — || — || — || – || — |-style="background:#;" | 66 || June 6 || Nationals || — || — || — || — || — || – || — |-style="background:#;" | 67 || June 7 || Cardinals || — || — || — || — || — || – || — |-style="background:#;" | 68 || June 8 || Cardinals || — || — || — || — || — || – || — |-style="background:#;" | 69 || June 9 || Cardinals || — || — || — || — || — || – || — |-style="background:#;" | 70 || June 11 || @ Reds || — || — || — || — || — || – || — |-style="background:#;" | 71 || June 12 || @ Reds || — || — || — || — || — || – || — |-style="background:#;" | 72 || June 13 || @ Reds || — || — || — || — || — || – || — |-style="background:#;" | 73 || June 14 || @ Tigers || — || — || — || — || — || – || — |-style="background:#;" | 74 || June 15 || @ Tigers || — || — || — || — || — || – || — |-style="background:#;" | 75 || June 16 || @ Tigers || — || — || — || — || — || – || — |-style="background:#;" | 76 || June 17 || Angels || — || — || — || — || — || – || — |-style="background:#;" | 77 || June 18 || Angels || — || — || — || — || — || – || — |-style="background:#;" | 78 || June 19 || Angels || — || — || — || — || — || – || — |-style="background:#;" | 79 || June 20 || Angels || — || — || — || — || — || – || — |-style="background:#;" | 80 || June 21 || Marlins || — || — || — || — || — || – || — |-style="background:#;" | 81 || June 22 || Marlins || — || — || — || — || — || – || — |-style="background:#;" | 82 || June 23 || Marlins || — || — || — || — || — || – || — |-style="background:#;" | 83 || June 25 || @ Astros || — || — || — || — || — || – || — |-style="background:#;" | 84 || June 26 || @ Astros || — || — || — || — || — || – || — |-style="background:#;" | 85 || June 27 || @ Astros || — || — || — || — || — || – || — |-style="background:#;" | 86 || June 28 || @ Yankees || — || — || — || — || — || – || — |-style="background:#;" | 87 || June 29 || @ Yankees || — || — || — || — || — || – || — |-style="background:#;" | 88 || June 30 || @ Yankees || — || — || — || — || — || – || —
|-style="background:#;" | 89 || July 1 || @ Yankees || — || — || — || — || — || – || — |-style="background:#;" | 90 || July 2 || @ Phillies || — || — || — || — || — || – || — |-style="background:#;" | 91 || July 3 || @ Phillies || — || — || — || — || — || – || — |-style="background:#;" | 92 || July 4 || @ Phillies || — || — || — || — || — || – || — |-style="background:#;" | 93 || July 6 || Padres || — || — || — || — || — || – || — |-style="background:#;" | 94 || July 7 || Padres || — || — || — || — || — || – || — |-style="background:#;" | 95 || July 8 || Padres || — || — || — || — || — || – || — |-style="background:#;" | 96 || July 9 || Royals || — || — || — || — || — || – || — |-style="background:#;" | 97 || July 10 || Royals || — || — || — || — || — || – || — |-style="background:#;" | 98 || July 11 || Royals || — || — || — || — || — || – || — |- style="text-align:center; background:#bbcaff;" | colspan="10" | 97th All-Star Game in Chicago, IL |-style="background:#;" | 99 || July 16 || @ Padres || — || — || — || — || — || – || — |-style="background:#;" | 100 || July 17 || @ Padres || — || — || — || — || — || – || — |-style="background:#;" | 101 || July 18 || @ Padres || — || — || — || — || — || – || — |-style="background:#;" | 102 || July 19 || @ Royals || — || — || — || — || — || – || — |-style="background:#;" | 103 || July 20 || @ Royals || — || — || — || — || — || – || — |-style="background:#;" | 104 || July 21 || @ Royals || — || — || — || — || — || – || — |-style="background:#;" | 105 || July 23 || Yankees || — || — || — || — || — || – || — |-style="background:#;" | 106 || July 24 || Yankees || — || — || — || — || — || – || — |-style="background:#;" | 107 || July 25 || Yankees || — || — || — || — || — || – || — |-style="background:#;" | 108 || July 27 || Brewers || — || — || — || — || — || – || — |-style="background:#;" | 109 || July 28 || Brewers || — || — || — || — || — || – || — |-style="background:#;" | 110 || July 29 || Brewers || — || — || — || — || — || – || — |-style="background:#;" | 111 || July 30 || Orioles || — || — || — || — || — || – || — |-style="background:#;" | 112 || July 31 || Orioles || — || — || — || — || — || – || —
|-style="background:#;" | 113 || August 1 || Orioles || — || — || — || — || — || – || — |-style="background:#;" | 114 || August 3 || @ Braves || — || — || — || — || — || – || — |-style="background:#;" | 115 || August 4 || @ Braves || — || — || — || — || — || – || — |-style="background:#;" | 116 || August 5 || @ Braves || — || — || — || — || — || – || — |-style="background:#;" | 117 || August 6 || @ Rays || — || — || — || — || — || – || — |-style="background:#;" | 118 || August 7 || @ Rays || — || — || — || — || — || – || — |-style="background:#;" | 119 || August 8 || @ Rays || — || — || — || — || — || – || — |-style="background:#;" | 120 || August 9 || Guardians || — || — || — || — || — || – || — |-style="background:#;" | 121 || August 10 || Guardians || — || — || — || — || — || – || — |-style="background:#;" | 122 || August 11 || Guardians || — || — || — || — || — || – || — |-style="background:#;" | 123 || August 13 || Tigers || — || — || — || — || — || – || — |-style="background:#;" | 124 || August 14 || Tigers || — || — || — || — || — || – || — |-style="background:#;" | 125 || August 15 || Tigers || — || — || — || — || — || – || — |-style="background:#;"