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    RonaldBolanos

    Kansas City Royals
    • Kansas City Royals
    • #57
    • Relief Pitcher
    • HT/WT
      6' 3", 220 lbs
    • Birthdate
      8/23/1996 (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
    • Overview
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    MIN -140
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    46-67

    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
    Fri 6/3vsHOUHOU
    L
    10-3
    0000.1333021
    Sun 5/29@MINMIN
    L
    7-3
    0002.0211000
    Thu 5/19vsCHWCHW
    L
    7-4
    0003.0311002
    Sat 5/14@COLCOL
    L
    10-4
    0004.0211124
    Mon 5/9@BALBAL
    L
    6-1
    0002.0200011
    Latest News
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    Racing Positions

      • Nats place Wood on IL with mild strained oblique
        • 2h
        Nats place Wood on IL with mild strained oblique
        • Fantasy baseball lineup advice for Wednesday: Look to Trevor Rogers, Reid Detmers
          • 2h
          • ESPN Fantasy
          Pitcher Trevor Rogers #28 of the Baltimore Orioles throws during the first inning of a baseball game against the Cincinnati Reds at Great American Ball Park on July 03, 2026 in Cincinnati, Ohio.
          • Spain World Cup hero Torres to throw out first pitch at Yankee Stadium
            • 3h
            • ESPN staff
            Ferran Torres of Spain kissed the Trophy during the FIFA World Cup 2026 Final match between Spain and Argentina
            • Athletics place Kurtz, Springs on injured list
              • 3h
              Nick Kurtz
              • Rockies, Moniak reach extension through 2028
                • 3h
                Mickey Moniak #22 of the Colorado Rockies warms up before batting in the first inning against the St. Louis Cardinals at Coors Field on July 22, 2025 in Denver, Colorado.
                • MLB awards: Yordan Alvarez pulling away from pack in AL MVP odds
                  • 5h
                  • Doug Greenberg
                  Yordan Alvarez
                  • Every team's odds to win the 2026 World Series: Dodgers get Skubal, remain clear favorites
                    • 5h
                    • Doug Greenberg
                    Tarik Skubal of the Los Angeles Dodgers looks on in the dugout against the Boston Red Sox during the ninth inning at Dodger Stadium.
                    • Skubal add strengthens Dodgers as betting faves
                      • 5h
                      • Doug Greenberg
                      Detroit Tigers starting pitcher Tarik Skubal is congratulated by his teammates in the dugout after being relieved during the seventh inning.
                      • Fantasy baseball rankings for 2026 points leagues
                        • 7h
                        • Tristan H. Cockcroft
                        Brent Rooker #25 of the Athletics celebrates after his three-run home run against the National League with Jonathan Aranda #62 of the Tampa Bay Rays and Alejandro Kirk #30 of the Toronto Blue Jays during the seventh inning of the MLB All-Star Game.
                        • Fantasy baseball: Wood hurt for Washington and more news for Tuesday
                          • 8h
                          • ESPN Fantasy
                          Washington Nationals right fielder James Wood (29) reacts after grounding with runners in scoring position during the seventh inning against the Philadelphia Phillies.

                        MLB News

                        Padres' Nick Pivetta abruptly walks off field during rehab outing

                        Padres' Nick Pivetta abruptly walks off field during rehab outing

                        Padres pitcher Nick Pivetta, making his first rehab outing since going on the injured list April 14, walked off the mound mid-inning with what appeared to be an injury.
                        Luis Arraez grateful to be with Phillies in playoff race

                        Luis Arraez grateful to be with Phillies in playoff race

                        Newly acquired Phillies second baseman Luis Arraez said he is excited to be in Philadelphia and in a playoff race.
                        Royals activate Bobby Witt Jr. after 2-week injury absence

                        Royals activate Bobby Witt Jr. after 2-week injury absence

                        The Royals activated All-Star shortstop Bobby Witt Jr. from the injured list Tuesday after he missed two weeks with back tightness.
                        Yankees boost lineup with new additions Lombard, Ramos

                        Yankees boost lineup with new additions Lombard, Ramos

                        Yankees highly touted prospect George Lombard Jr. and trade deadline addition Heliot Ramos were in the lineup for Tuesday's game against the Cardinals.
                        Nationals place James Wood on IL with strained oblique

                        Nationals place James Wood on IL with strained oblique

                        Nationals All-Star outfielder James Wood was placed on the 10-day injured list after suffering a left oblique strain while batting Monday night against the Phillies.
                        Fantasy baseball lineup advice for Wednesday: Get Trevor Rogers, Reid Detmers into your lineup

                        Fantasy baseball lineup advice for Wednesday: Get Trevor Rogers, Reid Detmers into your lineup

                        Everything you need to know to set your fantasy baseball lineups for Wednesday's MLB action.
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