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04/19/09 2:20 PM ET

Umpire Hickox likely out one week

Suffered concussion during Saturday's Indians-Yankees game

A day after taking a foul ball to the face, umpire Ed Hickox was pronounced likely out for a week due to a concussion, according to The Associated Press.

While working home plate during Saturday's Indians-Yankees game at Yankee Stadium, Hickox was struck in the middle of his face mask by a foul ball off the bat of Cleveland outfielder Ben Francisco in the sixth inning of the Indians' 22-4 romp.

Hickox left the field for a moment, but returned and remained in the game until second-base umpire Tom Hallion replaced him behind the plate in the eighth.

Crew chief Jerry Crawford, working behind the plate in the series finale on Sunday, told The AP he believes Hickox spent Saturday night in the hospital.

Mike Estabrook filled in for Hickox, working third base in the series finale between the two teams.

This story was not subject to the approval of Major League Baseball or its clubs.