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Directed by Fred C. Newmeyer, Warming Up is an early baseball film starring Richard Dix and Jean Arthur. After pitcher Bert Tolliver (Dix) is heckled by the members of a major-league team he's trying out for, he comes to believe that one of the players has hexed him. Luckily, a pretty girl named Mary (Arthur), who happens to be the daughter of the man who owns the Green Sox, discovers Bert at the local park, where he's amazing concession stand customers with his pitching accuracy. When it's time for the Green Sox to play the last game of the series, the team manager is forced by unforseen circumstances to let Bert pitch. As he faces the batter, Mary signals her love for him, in doing so giving Bert the inspiration he needed to end the jinx. Warming Up also features Claude King, Philo McCullough, and Billy Kent.