Complex sentence: He made his MLB debut the following day against the Milwaukee Brewers, and his first hit came in his third at bat of the game and was a grand slam off the Brewers' Shaun Marcum.
Split into simpler sentences: He made his MLB debut the following day against the Milwaukee Brewers. Crawford's first hit came in his third at bat of the game and was a grand slam off the Brewers' Shaun Marcum.