佐々木主浩
The forkball, if thrown correctly, is known to be a cause of significant and increasingly common damage to the shoulder and elbow. Famous forkballers, particularly Japanese players, have often required surgery to repair bone fractures or damaged tendons, sometimes several times in their careers. Younger players are discouraged from attempting to throw the forkball before reaching the age of 17–18. One such pitcher was former Yokohama BayStars and Seattle Mariners closer Kazuhiro Sasaki. However, these injuries are avoidable; if the pitcher does not snap his wrist in the motion, then the forkball theoretically should have no damaging effect to his arm. The only tradeoff is a slight decrease in speed; the pitch should still break the same way.