Leo Durocher made a career out of arguing with umpires. Per baseball-reference, he was ejected 100 times during his managing career, third-most among all managers. (Bobby Cox and John McGraw lead the list.)
Now, what we are looking at here is not necessarily an ejection, but after going through a number of possibilities, that’s where I looked, and found the answer.
First, though, let’s establish a couple of other things and for that, I’ll show you the entire photo:
The Cubs road uniform style shown was worn only from 1969-71, and since we don’t see the 1969 100th-anniversary patch on the right sleeve of No.