[frankbmd]

Ty won the MVP in 1911, and received MVP votes annually until 1915.
He averaged less than 70 walks per year for his career.

My question is "What happened in 1915?"

He didn't have any MVP votes in 1915.
1915 wasn't an outstanding year for him by his standards.
His 8 prime years preceded 1915.
The most walks he received in a season before 1915 was 64.
In 1915 he was walked 118 times, 54 more than his previous high during his prime.
His second best year for walking was 1924 with 85 free passes.

What am I missing? Is there an explanation for 1915, Cobb's year of walks?