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VIDEO HIGHLIGHTS STL@CHC: Concepcion fans two in perfect MLB debutGerardo Concepcion makes his Major League debut, striking out two over 1 1/3 perfect innings vs. the Cardinals Check out ... Gerardo Concepcion, LHP, Chicago Cubs, Pitching Mechanics, @SlowMoMechanics @MooreBaseballwww.moorebaseball.com Follow @MooreBaseball on Twitter & Instagram. Gerardo Concepcion, LHP, Chicago Cubs STL@CHC: Concepcion strikes out Moss in MLB debutGerardo Concepcion strikes out David Moss in his MLB debut to end the top of the 6th inning Check out http://m.mlb.com/video for ... Gerardo Concepción busca regresar a Ligas MayoresA sus 24 años el cubano Gerardo Concepción sabe lo que es brillar en un escenario importante después de haber ganado el ... Gerardo Concepcion - Chicago Cubs - Arizona Fall League 2014Gerardo Concepcion - Arizona Fall League - Chicago Cubs http://www.MLBProspectPortal.com - WATCH ALL VIDEOS IN High ... 2012/07/28 Concepcion on OzzieSD@MIA: Concepcion talks about Ozzie, Venezuela. RHP Gerardo Hernandez (2019 AZ), UncommittedRHP Gerardo Hernandez (2019 AZ), Uncommitted. JFK-Baseball Gerardo Hernandez Jol Concepcion (6-1-2019) vs. XST Blue Jays Intrasquad (Dunedin, FL)2019-06-01 vs. XST Blue Jays Intrasquad.