What pitcher averaged 301 innings per year during the 1950s?

Today’s question: How the game has changed! This hurler, now in the Hall of Fame, averaged – yes, averaged– 301 innings pitched per year for the decade of the 1950s, completing 237 of 370 games started in that ten year span. Can you name him? Hint: Not really a hint, but a hint of irony – made the 1956 NL All-Star team in a year in which he led the league in losses.

Yesterday’s answer: Moses Malone. Moses won the NBA MVP twice with Houston in 1979 and 1982, and once with Philadelphia in 1983, the same year they won the championship.