Hooks Wiltse of the Giants becomes the first pitcher of the modern era to fan four batters in a single inning, striking out the side in the 5th inning after the first Cincinnatibatter, Jim Delahanty, reaches base on Roger Bresnahan’s third-strike error. Wiltse also fans the side in the 4th inning to total seven batters punched out in just two innings, the first time this happens. Hooks K’s 12 Reds overall en route to a 4 – 1 victory. However, the Giants suffer a major loss when Turkey Mike Donlin, breaks his leg sliding into second base after getting three hits.

On May 15, 1906 — Hooks Wiltse of the Giants becomes the first pitcher of the modern era to fan four batters in a single inning, striking out the side in the 5th inning after the first Cincinnatibatter, Jim Delahanty, reaches base on Roger Bresnahan’s third-strike error. Wiltse also fans the side in the 4th inning to total seven batters punched out in just two innings, the first time this happens. Hooks K’s 12 Reds overall en route to a 4 – 1 victory. However, the Giants suffer a major loss when Turkey Mike Donlin, breaks his leg sliding into second base after getting three hits.

Source:
Baseball Reference May 15