Who was the youngest player to win 20 games in a season?

At 20 years, 282 days, Dwight Gooden became the youngest player to win 20 games in a season when he won his 20th for the New York Mets on August 25, 1985. Gooden went on to win the pitcher’s Triple Crown, leading the NL in wins (24), ERA (1.53), and strikeouts (268), and won the Cy Young Award that season. Before Gooden, Cleveland Indians star Bob Feller had held the record at 20 years, 309 days.