What is the MLB record for most errors committed by a single player on a single play?
I wondered about this today, when Giants shortstop Brandon Crawford was charged with two errors on the same play in the second inning. (With a runner at second, Crawford booted a ground ball, then threw wildly to first, allowing the runner from second to score.) I imagine this must happen with some regularity, but I had never seen it before.
This article reports that Tommy John committed three errors on one play in a game in 1988. The story suggests that at the time, this tied the record for pitchers, but does not address other positions or whether this dubious record has since been broken.
Has any player ever been charged with four or more errors on the same play?