[Alberta's Child]

Legend has it that Berry ran such precise routes that he and Johnny Unitas staged a demonstration for a reporter after practice one day. Berry ran ten consecutive slant patterns and Unitas completed nine of them … in the dark.

Supposedly, the two of them ended up arguing afterward about the one incomplete pass. Berry said Unitas overthrew the hall, and Unitas said Berry cut the route short. LOL.

[Tymesup]

Unitas and Berry supposedly practiced the slant pattern with Berry’s eyes closed.