What happened: Dodgers president Stan Kasten paid tribute to Tommy John, calling him an exceptional pitcher and crediting his willingness to undergo the elbow surgery that would carry his name. Kasten said John's impact extended beyond his playing career.

Why it matters: The procedure, first performed on John in 1974, reshaped how baseball treats and rehabilitates pitching injuries and remains standard practice across the sport five decades later. Tributes have circulated across MLB following news of John's death.

What to watch: Additional tributes from teams and players around the league are expected as the sport marks John's death.