At Brooklyn, Honus Wagner suffers a serious ankle injury rounding first in the 1st inning. He will miss 13 games, play one at first base, then miss another 12. With Wagner out, the Pirates will lose eight of 13 and drop out of the race.

On August 16, 1911 — At Brooklyn, Honus Wagner suffers a serious ankle injury rounding first in the 1st inning. He will miss 13 games, play one at first base, then miss another 12. With Wagner out, the Pirates will lose eight of 13 and drop out of the race.

Source:
Baseball Reference August 16
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game