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    SeanO'Sullivan

    • Starting Pitcher
    • Birthdate
      9/1/1987
    • BAT/THR
      Right/Right
    • Birthplace
      San Diego, CA

    Career Stats

    • W-L
      13-23
      ERA
      6.01
      K
      158
      WHIP
      1.58
    • Overview
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    Career Pitching

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    Stats
    Career
    GPGSCGSHOIPHRERHRBBK
    715600323.239822621659115158
    Latest News
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    Racing Positions

      • Red Sox demote Vazquez, send Buchholz to pen
        • 10Y
        • Kyle Brasseur
        Buchholz
        • Red Sox keep slow-starting Buchholz in rotation
          • 10Y
          • Tony Lee
          Clay Buchholz
          • Reds OF Byrd fractures wrist on HBP vs. Phillies
            • 2Y
            Marlon Byrd
            • Passan: What this year's final four says about labor -- and the game's future
              • 2h
              • Jeff Passan
              Christian Yelich #22 of the Milwaukee Brewers hits a two-run single in the third inning during Game 2 of the National League Championship Series.
              • Game 1 star Ramirez shoulders blame as two costly miscues sink Guardians
                • 2h
                Game 1 star Ramirez shoulders blame as two costly miscues sink Guardians
                • 'Fastball Freddy' cranks up velocity, shuts down Guardians as Rays even ALCS
                  • 3h
                  • Jesse Rogers
                  'Fastball Freddy' cranks up velocity, shuts down Guardians as Rays even ALCS
                  • 2026 MLB playoffs: Schedule, postseason bracket, standings
                    • 1h
                    • ESPN
                    2026 MLB playoffs: Schedule, postseason bracket, standings
                    • ALCS Game 2: Takeaways as Rays even series against Guardians
                      • 10h
                      • ESPN
                      ALCS Game 2: Takeaways as Rays even series against Guardians
                      • 'Adamant' Ohtani will be in Dodgers' Game 3 NLCS lineup, Roberts says
                        • 2h
                        • Alden Gonzalez
                        'Adamant' Ohtani will be in Dodgers' Game 3 NLCS lineup, Roberts says
                        • Source: Mariners get OK to interview Astros' Espada for managerial job
                          • 15h
                          Source: Mariners get OK to interview Astros' Espada for managerial job

                        MLB News

                        What this year's MLB playoffs say about baseball's future

                        What this year's MLB playoffs say about baseball's future

                        The No. 1 payroll in baseball -- and three others that barely add up to L.A.'s combined -- are left standing this October.
                        Freddy Peralta, Liam Hicks lift the Rays to a 3-1 win over the Guardians that evens the ALCS at 1-1

                        Freddy Peralta, Liam Hicks lift the Rays to a 3-1 win over the Guardians that evens the ALCS at 1-1

                        — With the crowd chanting his name, a fired-up Freddy Peralta pumped one fastball after another past hitters all night long.
                        Brewers take 2-0 NLCS lead into Game 3 against Dodgers

                        Brewers take 2-0 NLCS lead into Game 3 against Dodgers

                        Milwaukee Brewers (103-59, first in the NL Central during the regular season) vs. Los Angeles Dodgers (100-62, first in the NL West during the regular season)
                        Jose Ramirez takes blame as miscues sink Guardians in Game 2 of ALCS vs. Rays

                        Jose Ramirez takes blame as miscues sink Guardians in Game 2 of ALCS vs. Rays

                        Guardians star Jose Ramirez expressed regret for a pair of costly fourth-inning miscues that led to three unearned runs for the Rays, who evened the series with a 3-1 win in Game 2.
                        Freddy Peralta shuts down Guardians as Rays even ALCS with Game 2 win

                        Freddy Peralta shuts down Guardians as Rays even ALCS with Game 2 win

                        The Guardians knew what was coming but still couldn't touch starter Freddy Peralta, who topped 99 mph on his fastball and threw six scoreless innings as the Rays took Game 2 of the ALCS.
                        Rays bounce back and win Game 2 over Guardians 3-1

                        Rays bounce back and win Game 2 over Guardians 3-1

                        Rays bounce back and win Game 2 over Guardians 3-1
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