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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

      • Three potential paths forward for the Astros: From stay the course to trade everyone (yes, even Yordan Alvarez)
        • 1h
        • David Schoenfield
        Three potential paths forward for the Astros: From stay the course to trade everyone (yes, even Yordan Alvarez)
        • Olney: The six early X factors defining this year's MLB trade deadline
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          • Buster Olney
          Olney: The six early X factors defining this year's MLB trade deadline
          • 2026 MLB ABS challenge system tracker: Team, player rankings
            • 8h
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            ABS
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              A's Vegas stadium on schedule to open in 2028
              • Braves' Acuna leaves with bone bruise in thumb
                • 11h
                Braves' Acuna leaves with bone bruise in thumb
                • A's Clarke out until at least July due to hamstring
                  • 14h
                  A's Clarke out until at least July due to hamstring
                  • Yankees' Grisham avoids structural knee damage
                    • 12h
                    Yankees' Grisham avoids structural knee damage
                    • Fantasy baseball lineup advice for Friday: Don't sleep on Soroka vs. the Rockies
                      • 15h
                      • ESPN Fantasy
                      Fantasy baseball lineup advice for Friday: Don't sleep on Soroka vs. the Rockies
                      • Marlins prospect Snelling to undergo TJ surgery
                        • 16h
                        Miami Marlins starting pitcher Robby Snelling throws during the first inning of a baseball game against the Washington Nationals, Friday, May 8, 2026, in Miami.
                        • Mets' Senga to begin rehab assignment Friday
                          • 17h
                          Mets' Senga to begin rehab assignment Friday

                        MLB News

                        Best path for Astros? Weighing going for it, rebuild, big trades

                        Best path for Astros? Weighing going for it, rebuild, big trades

                        Keep going for it, soft rebuild or start from scratch? Houston has a decision to make, sooner rather than later.
                        Olney: 2026 MLB trade deadline X factors to watch

                        Olney: 2026 MLB trade deadline X factors to watch

                        Breaking down the themes that will shape the 2026 deadline and the teams that could be a part of it.
                        Marlins host the Mets on home losing streak

                        Marlins host the Mets on home losing streak

                        New York Mets (22-28, fourth in the NL East) vs. Miami Marlins (22-29, fifth in the NL East)
                        Tigers look to stop 3-game road slide, play the Orioles

                        Tigers look to stop 3-game road slide, play the Orioles

                        Detroit Tigers (20-31, fifth in the AL Central) vs. Baltimore Orioles (21-29, fifth in the AL East)
                        Reds play the Cardinals after Stewart's 4-hit game

                        Reds play the Cardinals after Stewart's 4-hit game

                        St. Louis Cardinals (28-21, third in the NL Central) vs. Cincinnati Reds (26-24, fifth in the NL Central)
                        Mariners visit the Royals to begin 3-game series

                        Mariners visit the Royals to begin 3-game series

                        Seattle Mariners (24-27, third in the AL West) vs. Kansas City Royals (20-30, fourth in the AL Central)
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