Tommy John can refer to two things: a former professional baseball pitcher and the surgery named after him. As a pitcher, Tommy John played 26 seasons in Major League Baseball (MLB) and is known for his longevity and for being the first person to undergo a successful ulnar collateral ligament (UCL) reconstruction surgery, now commonly known as "Tommy John surgery". Tommy John the brand is a company that designs and sells men's and women's underwear, loungewear, and apparel.
