Chicago White Sox starting pitcher Philip Humber delivers the first pitch of the game.

Rick West | Staff Photographer

Chicago White Sox starting pitcher Philip Humber reacts as Boston Red Sox catcher Jarrod Saltalamacchia circles the bases after a home run during Thursday's game at U.S. Cellular Field in Chicago. HIs homer followed a grand slam by teammate Kevin Youkilis.

Rick West | Staff Photographer

Dayan Viciedo is high-fived by White Sox teammates after his fourth-inning home run.

Rick West | Staff Photographer

Chicago White Sox starting pitcher Philip Humber leaves the field after his final inning of work .

Rick West | Staff Photographer

Chicago White Sox starting pitcher Philip Humber delivers a pitch to the first batter of the game .

Rick West | Staff Photographer

Boston Red Sox second baseman Dustin Pedroia claps after getting the first hit off of Chicago White Sox starting pitcher Philip Humber.

Rick West | Staff Photographer

Chicago White Sox starting pitcher Philip Humber heads into the dugout after his final inning of work.

Rick West | Staff Photographer

White Sox manager Robin Ventura and Red Sox manager Bobby Valentine talk before the game.

Rick West | Staff Photographer

Chicago White Sox left fielder Dayan Viciedo circles the bases after a home run.

Rick West | Staff Photographer

Chicago White Sox center fielder Alejandro De Aza breaks his bat in the first inning.

Rick West | Staff Photographer

Chicago White Sox starting pitcher Philip Humber walks back to the dugout after allowing two runs in the first inning.

Rick West | Staff Photographer

Red Sox teammates meet Kevin Youkilis at the plate after his third-inning grand slam.

Rick West | Staff Photographer

Fans watch Chicago White Sox starting pitcher Philip Humber warm up.

Rick West | Staff Photographer

Former Cub and current Red Sox outfielder Marlon Byrd signs autographs before the game.

Rick West | Staff Photographer

A fan honors Chicago White Sox starting pitcher Philip Humber's perfect game before Thursday's game at U.S. Cellular Field in Chicago.

Rick West | Staff Photographer