A rough night for the Chicago White Sox was headlined by Tim Anderson’s seventh-inning ejection after he seemed to bump an umpire after contesting a strike call.

Anderson and manager Tony La Russa were thrown out of Friday night’s 7-3 loss to the Oakland Athletics after a heated argument following a strike call that appeared to be high.

Anderson let home plate umpire Nick Mahrley know how he felt, prompting the ejection. But what followed next could lead to a lengthy suspension from Major League Baseball.