Whether or not a pitch is favorably, fairly or unfavorably called is dependent on the characteristics of the pitch and the context in which it is thrown. As it turns out, one of the most important factors is batter handedness.
Pitchers—both sinister and dextrous—are at a significant disadvantage when they face right-handed batters. That is to say, right-handed batters are significantly advantaged in terms of the strike zone. Take a look at how much the zone shrinks when a righty comes to the plate:
Continue reading at Beyond the Box Score.