Two o’clock hitter: A batter who hits really well during batting practice, but not so well during games. At one time, most games started at three o’clock, so batting practice was two o’clock. There is also a five o’clock hitter, a ten o’clock hitter, etc., all referring to practice time before the start of a game.
*please note that this is an excerpt from a page in the “How To Speak Baseball: An Illustrated Guide To Ballpark Banter” book.
A bird doesn't sing because it has an answer, it sings because it has a song. - Maya Angelou