Major League Baseball is looking into a verbal altercation between Rays left-hander David Price and home plate umpire Tom Hallion over the weekend.

Price accused Hallion of shouting a curse word toward him during Tampa Bay's 8-3 win over the Chicago White Sox on Sunday.

The AL Cy Young winner thought Hallion missed a pitch and exchanged words with the plate umpire while heading to the dugout after the seventh inning.

Hallion later called Price a "liar." Price took to Twitter and disputed Hallion's version.