"And master it (the knuckleball) he did. With the introduction of the designated hitter rule in the American League for the 1973 season, many predicted (Wilbur) Wood would have his biggest season ever. Now that the rubber-armed southpaw did not have to be removed for a pinch hitter in the late innings, it was figured he would be a lock for 30 wins. Some even predicted 40. Instead, Wilbur finished 24-20 for a White Sox club that won ten fewer games than in 1973. Still, Wood made history as his won-lost figure represented the first time a hurler both won and lost 20 games in the same season since Walter Johnson posted a 25-20 mark in 1916." - Historian Russell Wolinsky in Wilbur Wood's Rubber Arm (Can of Corn, Hall of Fame Website, 2004)