Racing PositionsRelief Efforts: Frieri, Downs sharing saves3dTristan H. CockcroftRussell, Dolis likely share Cubs saves3dAJ MassMontgomery looks sharp in awaited Arizona debut4h'Electric' d'Arnaud homers 3 times in Braves' win7hBooser's comeback story hits peak with Red Sox8hVerlander throws 6 solid innings in season debut7hAssociated PressLeMahieu's minors stint delayed as foot not '100%'8hStrider begins recovery, says Braves can win WS12hD-backs' Nelson, hit by comebacker, lands on IL12hRangers option rookie Leiter after shaky debut13h