When Eric Hosmer hits the ball on the ground, he is batting .125 with no extra base hits. When he hits the ball in the air, he is batting .348 with a .522 slugging percentage — an MVP candidate, essentially. If Hosmer is an anomaly, it’s only as a strong, 6-foot-4, cleanup-hitting first baseman. League wide, ground balls are producing a .237 average and .260 slugging percentage. Balls in the air are producing a .385 average and .849 slugging percentage.