RIP Bob Welch, who struck out Reggie Jackson to win a World Series game at age 21

The baseball community was saddened on Tuesday to learn of the passing of Bob Welch, who died of a heart attack. Welch, whose career spanned from 1978-1994, was well-known for winning the 1990 AL Cy Young Award with the Athletics and for the moment above from more than a decade earlier.

In 1978, the Dodgers were facing off against the Yankees in the World Series. Los Angeles led 4-3 with two outs in Game 2's ninth inning, but New York was threatening with two runners on base. Up to bat was none other than Reggie Jackson, who was a year removed from his legendary three-homer World Series game.

Thrust into this hyper-tense situation was Welch, who was just a 21-year-old rookie at the time. You can watch the entire at-bat above -- and see why it became such a signature moment in his career.