was just learning how to walk when he almost lost his right thumb.
When he was about 2 years old, Treinen cut that thumb on glass, and his uncle held it together on the way to the hospital before he underwent extensive surgery. Treinen saved his thumb, but it had limited range of motion after the procedure. However, that injury turned into a blessing when he started playing baseball.
Treinen practiced throwing two-seam fastballs with Roger Clemens and Pedro Martinez training baseballs, which featured fingerprints to signal where the user should place their fingers. But the right-hander noticed he wasn't throwing it like his idols.