Fluke or Breakout: Is Cedric Mullins’ 2021 Success Sustainable?
There might not have been a bigger surprise performer in 2021 than Cedric Mullins. With just over 400 plate appearances spread across parts of three years prior, he had put up a cumulative 72 wRC+ and accumulated -0.4 WAR; this season, he pushed his wRC+ up to 136 and posted 5.3 WAR, the 14th highest mark among all position players. He also became just the 11th player to reach 30 home runs and 30 stolen bases in a single season over the last decade.
The catalyst for his breakout season was quite simple: Mullins quit switch-hitting and began batting exclusively from the left side. That discussion had begun all the way back in 2018, his debut season, when then-Orioles manager Buck Showalter suggested it to him. After struggling to establish himself in the majors for three seasons, he finally decided to rely on his natural swing during the offseason. “It was getting difficult to try and create two different swings,” he told MASN’s Steve Melewski in March. “I know my left-side is my natural side, so trying to develop my right-handed swing at the highest level was challenging.”
Switch-hitting has always been a scarce skill, but the number of players who can swing both ways has dwindled in recent years. In 2021, just 17 qualified batters (13.1%) were switch-hitters, right in line with the league-wide average over the last decade. Compare that to the decade between 1986 and ’95 (excluding the strike-shortened 1994 season), when more than one in five qualified batters (21.1%) hit from both sides, with a peak of 24.8% in ’89. With modern baseball strategy so heavily emphasizing the platoon advantage, it’s surprising to see so few switch-hitters these days. Giving up that advantage in every at-bat is a radical decision, and there’s barely any precedent for it.
The number of players who have dropped switch-hitting after making their major league debuts is tiny. J.T. Snow did it in 1999, halfway through his career. So did Orlando Merced in 1996. Shane Victorino flip-flopped between switch-hitting and batting right-handed after injuries forced him to give up left-handed batting at various points during his career. More recently, Tucker Barnhart gave up switch-hitting in 2019. But those previous examples were all players who had already established themselves in the majors. Mullins could have seriously damaged his chances of having a productive major league career if his decision went wrong.
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