In the spring of 2016, when the Orioles had two first base prospects behind a freshly contracted Chris Davis and nowhere to play them, it was Trey Mancini's arm that kept the club from trying him in left field the way it did with Christian Walker.
Those doubts were put to bed a year later when Mancini was transitioned into an outfield role and took over regular left-field duties almost immediately, and his two outfield assists in the fifth inning Monday night illustrated how at least that facet of his defensive game has developed in his less than a full season's worth of work in the outfield.