When baseball was my life, in the 60's and 70's, Gibson was the best. My idol, Roberto Clemente, hit barely above .200 against him, the lowest average for Roberto against any pitcher he faced at least 100 times. When I went to a Bucco game and Gibson was on the mound I expected a loss and that's usually exactly what happened. Here is a Bob Prince radio call of the Bob Gibson no hitter against the Bucs in August, 1971.
Ironically, one of Roberto's hits broke Gibson's leg. It resulted in the call up of some left handed kid from their farm system, Lefty Carlton.