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    Kansas City Royals
    Ronald Bolanos

    RonaldBolanos

    Kansas City Royals
    • Kansas City Royals
    • #57
    • Relief Pitcher
    • HT/WT
      1.91 m, 99 kg
    • Birthdate
      23/8/1996 (29)
    • BAT/THR
      Right/Right
    • Birthplace
      Havana, Cuba
    • Status
      Minors

    2022 season stats

    • SV
      0
      150+
    • ERA
      4.42
    • K
      12
      150+
    • WHIP
      1.75
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    SV

    • 0

    K

    • 12

    ERA

    • 4.42

    WHIP

    • 1.75

    Career Pitching

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    Stats
    Career
    GPGSCGSHOIPHRERHRBBK
    1850048.049302872943

    Recent Games

    See All
    DateOPPResultGSCGSHOIPHRERHRBBK
    Sat 6/4vsHOUHOU
    L
    10-3
    0000.1333021
    Sun 5/29@MINMIN
    L
    7-3
    0002.0211000
    Thu 5/19vsCHWCHW
    L
    7-4
    0003.0311002
    Sun 5/15@COLCOL
    L
    10-4
    0004.0211124
    Mon 5/9@BALBAL
    L
    6-1
    0002.0200011
    Latest News
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    Racing Positions

      • Cubs place Shaw (back) on IL, call up Ramirez
        • 1h
        • Jesse Rogers
        Cubs place Shaw (back) on IL, call up Ramirez
        • Fantasy baseball: Gerrit Cole makes first start since 2024 in Tommy John return
          • 1h
          • ESPN Fantasy
          Fantasy baseball: Gerrit Cole makes first start since 2024 in Tommy John return
          • Reliever depth chart: Who's closing, who's tired and who's next?
            • 2h
            • Fantasy Staff
            Kenley Jansen #74 of the Detroit Tigers poses for a photo.
            • Fantasy baseball forecaster: Pitcher projections for the next 10 days
              • 2h
              • 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.
              • Fantasy baseball forecaster: Team hitting ratings
                • 2h
                • 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 for Week 9: May 25-31
                  • 4h
                  • Tristan H. Cockcroft
                  Fantasy Baseball Forecaster for Week 9: May 25-31
                  • Fantasy baseball lineup advice for Friday: Don't sleep on Soroka vs. the Rockies
                    • 2h
                    • ESPN Fantasy
                    Fantasy baseball lineup advice for Friday: Don't sleep on Soroka vs. the Rockies
                    • Three potential paths forward for the Astros: From stay the course to trade everyone (yes, even Yordan Alvarez)
                      • 7h
                      • David Schoenfield
                      Three potential paths forward for the Astros: From stay the course to trade everyone (yes, even Yordan Alvarez)
                      • Olney: The themes shaping this year's MLB trade deadline -- and the teams involved
                        • 4h
                        • Buster Olney
                        Olney: The themes shaping this year's MLB trade deadline -- and the teams involved
                        • 2026 MLB ABS challenge system tracker: Team, player rankings
                          • 14h
                          • ESPN
                          ABS

                        MLB News

                        Cubs put Matt Shaw on injured list, call up Pedro Ramirez

                        Cubs put Matt Shaw on injured list, call up Pedro Ramirez

                        The Cubs have placed Matt Shaw (back tightness) on the injured list and called up infielder Pedro Ramirez, who was hitting .312 with nine home runs in Triple-A.
                        Fantasy baseball: Gerrit Cole makes first start since 2024 in Tommy John return

                        Fantasy baseball: Gerrit Cole makes first start since 2024 in Tommy John return

                        All of the important fantasy spin and actionable takeaways resulting from the latest baseball news.
                        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.
                        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 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 Week 9: May 25-31

                        Fantasy Baseball Forecaster Week 9: May 25-31

                        Set your lineups for the week ahead in fantasy baseball with our preview featuring pitcher rankings, hitter ratings and schedule observations.
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