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    IsaacMattson

    Seattle Mariners
    • Seattle Mariners
    • #72
    • Relief Pitcher
    • HT/WT
      1.88 m, 97 kg
    • Birthdate
      14/7/1995 (31)
    • BAT/THR
      Right/Right
    • Birthplace
      Erie, PA
    • Status
      Active

    2026 season stats

    • SV
      0
      150+
      ERA
      5.35
      K
      36
      150+
      WHIP
      1.60
    • Overview
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    • Isaac Mattson
      Isaac Mattson
      #72
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      Jose Ferrer
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      Andres Munoz
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      Michael Rucker
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    • Gabe Speier
      Gabe Speier
      #55
    • Troy Taylor
      Troy Taylor
      #59
    • Carlos Vargas
      Carlos Vargas
      #54
    • Cole Wilcox
      Cole Wilcox
      #43
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    Full Splits
    Los Angeles Angels logo
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    Seattle Mariners logo
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    7Winner Icon Seattle Mariners

    SV

    • 0

    K

    • 36

    ERA

    • 5.35

    WHIP

    • 1.60
    SplitsGPGSCGSHOIPHRERHRBBK
    vs. LAA10002.0433002
    Home2200024.027141401222
    vs. AL900011.09551311
    September10002.0433002

    2026 Pitching

    See All
    Stats
    Regular Season
    Career
    GPGSCGSHOIPHRERHRBBK
    3800038.244232331836
    8900096.085434274790

    Recent Games

    See All
    DateOPPResultGSCGSHOIPHRERHRBBK
    Sun 9/6vsLAALAA
    L
    6-1
    0002.0433002
    Tue 8/18vsDETDET
    L
    8-5
    0002.0211021
    Wed 7/29vsARIARI
    L
    8-7 F/12
    0001.2311013
    Sun 7/26vsCHCCHC
    L
    11-0
    0000.1433011
    Sun 7/19@CLECLE
    W
    7-1
    0001.0000001
    Latest News
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    Racing Positions

      • Pirates reliever Mattson lands on IL due to hip
        • 2M
        Pirates reliever Mattson lands on IL due to hip
        • Ashcraft goes 3 scoreless innings in Pirates debut
          • 1Y
          Ashcraft goes 3 scoreless innings in Pirates debut
          • Ex-MLB star Teixeira wins election to U.S. House in Texas; Tuberville to be Alabama Gov.
            • 3h
            Ex-MLB star Teixeira wins election to U.S. House in Texas; Tuberville to be Alabama Gov.
            • Murphy says he regrets Yankees barb, didn't mean to 'slander' Bombers
              • 14h
              Manager Pat Murphy of the Milwaukee Brewers looks on prior to a game against the Pittsburgh Pirates.
              • Guide to MLB's labor battle: Will there be a lockout? A salary cap?
                • 16h
                • ESPN
                Commissioner Robert Manfred Jr. speaks to the audience during the Roberto Clemente Award presentation prior to Game 3 of the 2026 World Series.
                • MLB proposes delaying salary cap until 2028 amid start of free agency, labor uncertainty
                  • 11h
                  • Jeff Passan
                  Baseball
                  • MLB labor battle: Latest updates, full coverage on CBA, salary cap, more
                    • 17h
                    • ESPN
                    Robert D. Manfred
                    • Mariners hire Kanzler as manager to replace fired Wilson
                      • 18h
                      • Alden Gonzalez
                      Mariners logo
                      • Tracking MLB offseason manager changes: Mariners to hire first-time skipper Jason Kanzler
                        • 19h
                        • ESPN
                        Manager Kurt Suzuki of the Los Angeles Angels looks on from the dugout.
                        • From Tarik Skubal to ...? Rankings, contract projections for the top 50 MLB free agents
                          • 1d
                          • Kiley McDaniel
                          Freddy Peralta, Tarik Skubal, Randy Arozarena & Seiya Suzuki

                        2026 AL West Standings

                        TeamWLPCTGBSTRK
                        Houston8181.500-W2
                        Texas8082.4941L1
                        Seattle7686.4695W2
                        Athletics6498.39517L2
                        Los Angeles62100.38319L2
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