Gregory Alan "Greg" Maddux (born April 14, 1966), nicknamed "Mad Dog" and "The Professor", is a former Major League Baseball (MLB) pitcher. He is best known for playing for the Chicago Cubs and the Atlanta Braves.

He was the first pitcher in major league history to win the Cy Young Award for four consecutive years (1992–1995), a feat matched only by one other pitcher (Randy Johnson). During those four seasons, Maddux had a 75–29 record with a 1.98 earned run average(ERA), while allowing less than one runner per inning.