By that time the knuckleball torch had passed to Hoyt Wilhelm although he threw it harder than Leonard .
Hoyt Wilhelm joined the Giants in 1952 and led the NL in ERA. Wilhelm had learned the knuckler after he saw a photo of Dutch Leonard 's grip .
By that time the knuckleball torch had passed to Hoyt Wilhelm , who joined the Giants in 1952 and led the NL in ERA. Wilhelm had learned the knuckler after he saw a photo of Dutch Leonard 's grip , although he threw it harder than Leonard .