The meaning of a middle name ‘Sport’

The meaning of a middle name ‘Sport’

The passage below is from The Library: A Fragile History by Andrew Pettegree.

King George’s nose remained intact, but Mayor Thompson’s one-sided feud was not over. He now announced that the city library must be purged of pro-British literature. Since the mayor was simultaneously engaged on hounding out of office the supervisor of schools, this task was delegated to one of his appointees, Urbine ‘Sport’ Herrmann. The director of the public library, Carl Roden, offered only tepid resistance. Noting that identifying all books expressing anti-American sentiment would be a huge task, he offered instead to remove them from general circulation to the safety of the library’s closed reserve. In the event, the books were saved by Herrmann’s indolence. Having checked out four books flagged up by the Patriots League, he found the task of locating the offensive passages beyond his capacities, and tamely returned them the following day.

In this passage I cannot figure out the meaning of Urbine Herrmann’s middle name ‘Sport’.

Is it because he is amusing, fashionable, or something else?

Thanks in advance.