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    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
    • Overview
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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
    Mon 5/30@MINMIN
    L
    7-3
    0002.0211000
    Fri 5/20vsCHWCHW
    L
    7-4
    0003.0311002
    Sun 5/15@COLCOL
    L
    10-4
    0004.0211124
    Tue 5/10@BALBAL
    L
    6-1
    0002.0200011
    Latest News
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    Racing Positions

      • Fantasy Baseball Forecaster for Week 18: Aug. 3-9
        • 1h
        • Tristan H. Cockcroft
        Jesus Luzardo
        • MLB trade grades: Phillies add Arraez, Jays snag Soriano
          • 1h
          • Bradford Doolittle, David Schoenfield
          Jose Soriano
          • 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: 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.
              • MLB trade deadline tracker, intel and analysis: Rutschman to Red Sox latest blockbuster deal
                • 2h
                • ESPN
                Adley Rutschman #35 of the Baltimore Orioles catches against the Kansas City Royals at Oriole Park at Camden Yards.
                • Sources: Rays trade for Marlins catcher Hicks
                  • 1h
                  Miami Marlins' Liam Hicks scores on a triple by Otto Lopez during the sixth inning of a baseball game against the Tampa Bay Rays .
                  • Fantasy baseball: Reactions to MLB trade deadline deals
                    • 2h
                    • ESPN Fantasy
                    Baltimore Orioles catcher Adley Rutschman (35) and field coordinator/catching coach Joe Singley (87) walk to the bullpen before the start of the game against the Boston Red Sox at Fenway Park.
                    • Sources: O's trade All-Star C Rutschman to BoSox
                      • 1h
                      Adley Rutschman #35 of the Baltimore Orioles reacts after making the last out of the game.
                      • Ranking every prospect dealt before the 2026 MLB trade deadline
                        • 2h
                        • Kiley McDaniel
                        Ranking every prospect dealt before the 2026 MLB trade deadline
                        • Sources: Pads add Giants' Ray for rotation help
                          • 2h
                          Sources: Pads add Giants' Ray for rotation help

                        MLB 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.
                        Source: Brewers acquire Dustin May, JoJo Romero from Cardinals

                        Source: Brewers acquire Dustin May, JoJo Romero from Cardinals

                        The Brewers are acquiring right-hander Dustin May and left-hander JoJo Romero from the Cardinals in exchange for multiple prospects, a source told ESPN.
                        2026 MLB trade deadline tracker: Rumors, news, analysis

                        2026 MLB trade deadline tracker: Rumors, news, analysis

                        Which contenders will make the biggest splash? What we're hearing as 6 p.m. ET approaches.
                        Fantasy baseball: Reactions to MLB trade deadline deals

                        Fantasy baseball: Reactions to MLB trade deadline deals

                        Track the fantasy fallout from all the key deals as we head toward the MLB trade deadline on Monday.
                        Source: Pirates acquire reliever Weaver in trade with Mets

                        Source: Pirates acquire reliever Weaver in trade with Mets

                        The New York Mets have offloaded a third relief pitcher at the trade deadline, moving right-hander Luke Weaver to the Pirates in exchange for infield prospect Sammy Stafura, according to multiple reports.
                        Bryce Harper returns to Phillies' outfield after Luis Arraez trade

                        Bryce Harper returns to Phillies' outfield after Luis Arraez trade

                        Bryce Harper will "ease" back into playing right field to help fix the Phillies' infield conundrum caused by the acquisition of second baseman Luis Arraez.
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