The Live Ball Era, beginning in 1920, changed the face of baseball by introducing a number of rules to help both the pitcher and the batter as well as changing the actual cosmetics of the ball for better game play. Run production increased and major advantages of the pitcher were diminished.Since then, MLB pitchers have had an ERA under 2.00 in a single season with at least 20 starts only 46 times. How many of them can you name?