Chicago Cubs' Kerry Wood gets a hug from Casey Coleman before the Cubs play the Chicago White Sox at Wrigley Field on Friday, May 18, 2012.

George LeClaire | Staff Photographer

Chicago Cubs' Kerry Wood gets a hug from his son, Justin, after Wood left the game after fanning Chicago White Sox Dayan Viciedo in the 8th inning.

George LeClaire | Staff Photographer

Chicago Cubs' Kerry Wood comes out of the game fter facing Chicago White Sox Dayan Viciedo in the 8th inning .

George LeClaire | Staff Photographer

Chicago Cubs' Kerry Wood gets a standing ovation after facing Chicago White Sox Dayan Viciedo in the 8th inning.

George LeClaire | Staff Photographer

Chicago Cubs' Kerry Wood gets a standing ovation after facing Chicago White Sox Dayan Viciedo in the 8th inning.

George LeClaire | Staff Photographer

Chicago Cubs' Kerry Wood gets a standing ovation after facing White Sox Dayan Viciedo in the 8th inning .

George LeClaire | Staff Photographer

Chicago White Sox manager Robin Ventura, left, and Chicago Cubs manager Dale Sveum talk during batting practice before a baseball game, Friday, May 18, 2012 in Chicago.

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Chicago White Sox second baseman Gordon Beckham, left, knocks Chicago Cubs' David DeJesus off the bag for an out after DeJesus tried to stretch a single into a double during the fifth inning of a baseball game, Friday, May 18, 2012 in Chicago.

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Chicago Cubs shortstop Starlin Castro, right, leaps over Chicago White Sox's Alex Rios after throwing to first base to complete a double play on a ground ball hit by A.J. Pierzynski during the sixth inning of an interleague baseball game, Friday, May 18, 2012 in Chicago.

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Chicago Cubs relief pitcher Kerry Wood stands on the field for the national anthem before an interleague baseball game against the Chicago White Sox, Friday, May 18, 2012 in Chicago. Wood, who electrified baseball with a 20-strikeout game as a rookie in 1998 and then became a reliever after his career was slowed by numerous injuries, retired after pitching on Friday.

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Chicago White Sox's Gordon Beckham, right, congratulates Paul Konerko after Konerko hit a two-run home run scoring Beckham during the first inning of an interleague baseball game against the Chicago Cubs, Friday, May 18, 2012 in Chicago.

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Chicago White Sox's Paul Konerko is hit in the head with a pitch during the third inning of an interleague baseball game against the Chicago Cubs, Friday, May 18, 2012 in Chicago. Konerko left the game after being hit.

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Chicago Cubs relief pitcher Kerry Wood, right, runs in from the outfield with his son Justin during batting practice before a baseball game against the Chicago White Sox, Friday, May 18, 2012, in Chicago.

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Chicago Cubs starting pitcher Jeff Samardzija delivers during the first inning of a baseball game against the Chicago White Sox, Friday, May 18, 2012 in Chicago.

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Chicago White Sox manager Robin Ventura, right, walks off the field with Paul Konerko after Konerko was hit in the head by a pitch and had to leave the game during the third inning of an interleague baseball game against the Chicago Cubs, Friday, May 18, 2012 in Chicago.

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Chicago Cubs manager Dale Sveum, left, and Chicago White Sox manager Robin Ventura shake hands after posing for photos with the BP Crosstown Cup before their baseball game on Friday, May 18, 2012, in Chicago. The Cubs and White Sox play two three-game series every year with the winner taking home the trophy.

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Chicago Cubs relief pitcher Kerry Wood, ;eft, stands in the outfield with his son Justin during batting practice before a baseball game against the Chicago White Sox, Friday, May 18, 2012, in Chicago.

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Second base umpire Eric Cooper, center, ejects Chicago Cubs manager Dale Sveum, left, after Sveum came out to argue a call during the fifth inning of an imterleague baseball game against the Chicago White Sox, Friday, May 18, 2012 in Chicago. Cubs third base coach Pat Listach watches the argument.

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Chicago White Sox starting pitcher Philip Humber delivers during the first inning of an interleague baseball game against the Chicago Cubs, Friday, May 18, 2012 in Chicago.

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Chicago White Sox's Paul Konerko connects on a two-run home run scoring Gordon Beckham during the first inning of a baseball game against the Chicago Cubs, Friday, May 18, 2012 in Chicago.

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Chicago Cubs relief pitcher Kerry Wood, right, stands in the outfield with his son Justin during batting practice before a baseball game against the Chicago White Sox, Friday, May 18, 2012, in Chicago.

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Chicago Cubs relief pitcher Kerry Wood, left, plays in the outfield with his son Justin during batting practice before a baseball game against the Chicago White Sox, Friday, May 18, 2012, in Chicago.

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Chicago Cubs' Tony Campana, left, steals second base as Chicago White Sox shortstop Alexei Ramirez puts on a late tag during the first inning of a baseball game, Friday, May 18, 2012 in Chicago.

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Chicago White Sox's Paul Konerko, right, falls to the ground after being hit in the head with a pitch as Chicago Cubs catcher Welington Castillo looks on during the third inning of a baseball game, Friday, May 18, 2012, in Chicago.

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