It became a heated game between longtime rivals New York Yankees and Boston Red Sox on Sunday night.
According to Fox News, Alex Rodriguez was hit by a fastball thrown by Boston's starter Ryan Dempster in the second inning, and apparently some believe it wasn't by accident.
"You're a cheater!" Fans yelled, as Dempster threw the pitch behind Rodriguez's knees.
The incident led to an angry scene, and resulted in Yankees' manager Joe Girardi to be ejected from Fenway Park.