Answer
Warren Spahn recorded more career wins than Maddux since the start of the post-1920 live-ball era. He played in the MLB from 1942 to 1965, and was a 20-game winner 13 times. He won 363 games in his career, which is the most of any pitcher since the start of the live-ball era. Maddux, on the other hand, won 355 games in his career.