['inningNumber | An_inning_earlier', 'pitcherName | 22-year-old_pitcher', 'pitcherName | Martinez', 'strikingType | grounding_out', 'umpireName | Jeff_Nelson']
An inning earlier, Martinez tossed his bat behind his back in the direction of home plate after grounding out, leading umpire Joe West to raise his arms and stare at the 22-year-old pitcher for a few seconds.