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    MasaKobayashi

    • Relief Pitcher
    • Birthdate
      5/24/1974
    • BAT/THR
      Right/Right
    • Birthplace
      Yamanashi, Japan

    Career Stats

    • SV
      6
      ERA
      5.10
      K
      39
      WHIP
      1.45
    • Overview
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    6700065.1773937101839
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    Racing Positions

      • Fantasy Baseball Forecaster for Week 22: Aug. 31 - Sept. 6
        • 15m
        • Tristan H. Cockcroft
        Seattle Mariners starting pitcher Logan Gilbert (36) throws a pitch in the top of the fourth inning during the MLB game between the Philadelphia Phillies and Seattle Mariners on August 24, 2026 at T-Mobile Park in Seattle, Washington.
        • Fantasy baseball news and notes: Ailing Arenado sits for Arizona and more for Friday
          • 3h
          • ESPN Fantasy
          Gabriel Arias #43 of the Chicago Cubs tags out Nolan Arenado #28 of the Arizona Diamondbacks during the fourth inning at Chase Field.
          • Fantasy baseball forecaster: Team hitting ratings
            • 6h
            • Tristan H. Cockcroft
            Los Angeles Dodgers first baseman Freddie Freeman (5) rounds third base to score in the third inning against the Los Angeles Angels at Dodger Stadium.
            • Fantasy baseball forecaster: Pitcher projections for the next 10 days
              • 6h
              • Tristan H. Cockcroft
              Philadelphia Phillies starting pitcher Cristopher Sánchez (61) flips the ball to first base in the first inning New York Mets at Citi Field.
              • Reliever depth chart: Who's closing, who's tired and who's next?
                • 6h
                • Fantasy Staff
                San Diego Padres' Mason Miller looks on during the ninth inning of a baseball game against the Milwaukee Brewers.
                • MLB betting tips for Friday: Will Wacha end Cleveland's winning streak?
                  • 5h
                  • Derek Carty
                  Kansas City Royals starting pitcher Michael Wacha (52) throws a pitch in the first inning against the Athletics at Kauffman Stadium.
                  • ⁠How many injuries are too many for Yankees? Best-case scenarios and status updates for Judge, Fried & Co.
                    • 7h
                    • Jorge Castillo
                    Giancarlo Stanton, Aaron Judge and Max Fried of the New York Yankees stand in the dugout.
                    • All-dirt fields, swinging with one hand and screaming at teammates: Nico Hoerner's unique path to the majors
                      • 4h
                      • Jesse Rogers
                      All-dirt fields, swinging with one hand and screaming at teammates: Nico Hoerner's unique path to the majors
                      • 2026 MLB ABS challenge system tracker: Team, player rankings
                        • 11h
                        • ESPN
                        ABS
                        • Lombard ties dubious Yanks mark with latest error
                          • 12h
                          Lombard ties dubious Yanks mark with latest error

                        MLB News

                        Fantasy baseball forecaster: Team hitting ratings

                        Fantasy baseball forecaster: Team hitting ratings

                        Stay ahead of the game and optimize your fantasy baseball hitters with our forecaster, which provides a rolling 10-day outlook of every team's hitting matchups as well as the potential for stolen bases.
                        Fantasy baseball forecaster: Pitcher projections for the next 10 days

                        Fantasy baseball forecaster: Pitcher projections for the next 10 days

                        Keep up to date on who is pitching -- and how well they're expected to do -- with our forecaster, which provides a rolling 10-day outlook of every team's probable starting pitchers with game score projections.
                        Fantasy Baseball Reliever Depth Chart

                        Fantasy Baseball Reliever Depth Chart

                        Our updated reliever depth chart displays the closer hierarchy for each team, as well as the fatigue factor in each MLB bullpen.
                        MLB betting tips for Friday: Will Wacha end Cleveland's winning streak?

                        MLB betting tips for Friday: Will Wacha end Cleveland's winning streak?

                        All of the odds, recommended prop bets and trends in baseball for Friday, August 28.
                        What's next for Aaron Judge, Max Fried and other injured Yankees

                        What's next for Aaron Judge, Max Fried and other injured Yankees

                        With October approaching, we break down New York's walking wounded.
                        Inside Nico Hoerner's unique path to stardom with Cubs

                        Inside Nico Hoerner's unique path to stardom with Cubs

                        In an era of big-money youth baseball, the Cubs' second baseman took an unusual route to stardom.
                        All MLB News
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