Knock the Cover Off the Ball (1866)

“[Joe] Start tried to knock the cover off the ball, getting to his second, and bringing Smith home.” The World (New York), October 3, 1866, p. 9.[Ken Liss]

Previous earliest use (Dickson Baseball Dictionary, 3rd edition, 2009):
1ST USE. 1873 (New York Herald, Aug. 10; Edward J. Nichols). 

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