Regression to the mean. The Yankees have the second best ExWL in the majors at 70-42 behind only Boston's of 70-41. The next best are the Tigers, Angels, and Padres at 62-48. More fun with ExWL: While the Yankees are underperforming the most based on ExWL at 8 games (they are 62-50), the Diamondbacks are the team that is outperforming based on ExWL. Arizona, which sits is 63-50, has been outscored by 29 runs this year and is playing 10 games over their ExWL. Arizona is followed by the Cardinals (7 games over) and the White Sox (6 games over).