Throwback Photo of the Day: Joe DiMaggio is very suspicious of this speed bag

Just think about it for a second -- Joltin' Joe is an excellent nickname for a boxer and would not have been out of place alongside Smokin' Joe Frazier or Sugar Ray Leonard. So it's not terribly surprising that one day in 1938, Joe DiMaggio went a few rounds with a speed bag at McGovern Gymnasium in New York.

But, as you can see in the photo above, he definitely does not trust his opponent. Who knows what that speed bag could get up to? Inanimate objects can turn on you at any second.

DiMaggio was right to beware.