The pitcher reportedly had undergone treatment related to a recurrence of bladder cancer
Source: [Yahoo Sports](https://sports.yahoo.com/articles/former-yankees-pitcher-pioneering-surgery-170239102.html)
John, in 1974, underwent a then-experimental elbow surgery that would later save the careers of countless pitchers
The pitcher's legacy inspired tributes from around the baseball world
Tommy John, who won 288 games during a 26-year big league career and became the first pitcher to successfully return following groundbreaking elbow surgery that later was named after him, has died. He was 83.
John was first player to undergo pioneering operation New York Yankees pay tribute to four-time All-Star Tommy John, the namesake of a ligament-replacement surgery that paved a path to recovery for injured baseball players, has died. He was 83. TMZ.
Longtime major league pitcher Tommy John has passed away at age 83
The former Yankee pitcher who gave his name to the UCL reconstruction surgery passed away on Saturday.