BASEBALL: The Dark Side : A WEEKLY LOOK AT THE NOT--SO--GREAT STATISTICS : PITCHING’S 20-20 CLUB

At least 20 victories and 20 losses in the same season:

Year Pitcher Record 1913 Jim Scott, Chicago (AL) 20-20 1916 Walter Johnson, Washington (AL) 25-20 1973 Wilbur Wood, Chicago (AL) 24-20 1979 Phil Niekro, Atlanta (NL) 21-20

Source: Baseballistics by Bert Sugar