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    IsaacMattson

    Seattle Mariners
    • Seattle MarinersMariners
    • #72
    • Relief PitcherRP
    • HT/WT
      1.88 m, 97 kg
    • Birthdate
      14/7/1995 (31)
    • BAT/THR
      Right/Right
    • 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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      #13
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      #68
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      #82
    • Seranthony Dominguez
      Seranthony Dominguez
      #58
    • Jose Ferrer
      Jose Ferrer
      #45
    • Andres Munoz
      Andres Munoz
      #75
    • Michael Rucker
      Michael Rucker
      #38
    • Gabe Speier
      Gabe Speier
      #55
    • Troy Taylor
      Troy Taylor
      #59
    • Carlos Vargas
      Carlos Vargas
      #54
    • Cole Wilcox
      Cole Wilcox
      #43
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    62-100
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    Seattle Mariners logo
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    76-86
    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
    Mon 7/20@CLECLE
    W
    7-1
    0001.0000001
    Latest News
    See All

    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-Guardians catcher Naylor: Nothing unusual about Clase, Ortiz pitches
            • 4h
            • David Purdum
            Ex-Guardians catcher Naylor: Nothing unusual about Clase, Ortiz pitches
            • West among 5 ex-umps to sue over retirement plan, claim they're owed money
              • 8h
              umpire Joe West
              • Varland, Pages, Latz among Super 2s eligible for salary arbitration
                • 9h
                Toronto Blue Jays Relief Pitcher Louis Varland (77) throws a pitch during the MLB regular season game between the Colorado Rockies and the Toronto Blue Jays on March 30, 2026, at Rogers Centre in Toronto, ON, Canada.
                • Best of the MLB playoffs: The moments, games and series that defined October
                  • 17h
                  • ESPN
                  Best of the MLB playoffs: The moments, games and series that defined October
                  • Kanzler rides atypical path to Mariners job: 'He left us no choice'
                    • 1d
                    Kanzler rides atypical path to Mariners job: 'He left us no choice'
                    • Francona brings in former assistant Torres as Reds pitching coach
                      • 18h
                      Francona brings in former assistant Torres as Reds pitching coach
                      • Pujols to interview for Astros' managerial opening, sources say
                        • 1d
                        • Alden Gonzalez
                        Pujols to interview for Astros' managerial opening, sources say
                        • Athletics tab Brewers' Castro as new GM amid front office rebuild
                          • 1d
                          Athletics tab Brewers' Castro as new GM amid front office rebuild

                        2026 AL West Standings

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