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Infielder Brett Wallace and a number of Astros are very familiar with DeFrancesco after playing for him in Oklahoma City this season.

“He’s passionate, he wants to win, and he’s definitely a good motivator,” Wallace said. “He’s always won, and he’s passionate for the game. He’ll want to make us the best we can be.”

Oklahoma City hitting coach Leon Roberts will manage Sunday’s game for the RedHawks and Luhnow said they’d likely name an interim manager there later Sunday.