Who has won the MLB Cy Young Award? All-time winners list - ESPN
From its inception in 1956 until 1966, the Cy Young Award was given annually to the best pitcher in Major League Baseball. Since then, the award has been presented every season to the best pitcher in each league — American League and National League. The Baseball Writers' Association of America votes on the Cy Young Award at the end of each season and before the start of the postseason. The award is named after the winningest pitcher in baseball history. Cy Young compiled a record 511 victories (511-316) for five teams during his 22-year MLB career (1890-1911).