9 Vernon Wells baseball sent to a heckler at Jacobs Field in Cleveland.

MIAMI - MARCH 26: Serena Williams reacts during her match against Lucie Safarova of the Czech Republic during day six at the 2007 Sony Ericsson Open at the Tennis Center at Crandon Park on March 26, 2007 in Miami, Florida. (Photo by Chris McGrath/Getty Images) *** Local Caption *** Serena Williams

ATLANTA - NOVEMBER 26: Michael Vick #7 of the Atlanta Falcons shows frustration at the end of the game against the New Orleans Saints at the Georgia Dome on November 26, 2006 in Atlanta, Georgia. The Saints defeated the Falcons 31-13. (Photo by Scott Cunningham/Getty Images)

The New York Knicks' Antonio Davis climbs into the stands during overtime because he thought his wife, Kendra, was hit by a fan during their game against the Chicago Bulls at the United Center in Chicago, Illinois, Wednesday, January 18, 2006. (Charles Cherney/Chicago Tribune/KRT)

New York Yankees left fielder Gary Sheffield (11) argues with fans who may have interfered with him while trying to field a RBI triple by Boston Red Sox Jason Varitek in the eighth inning at Fenway Park in Boston, Thursday April 14, 2005. (AP Photo/Charles Krupa)

Denver quarterback Jake Plummer looks for a receiver in the first half at Invesco Field at Mile High in Denver, Colorado, December 12, 2004. The Broncos won, 20-17. Miami Dolphins vs Denver Broncos - December 12, 2004 Photo by Barry Taylor/WireImage.com

LOS ANGELES - DECEMBER 4: Latrell Sprewell #8 of the Minnesota Timberwolves celebrates during the game against the Los Angeles Clippers at Staples Center on December 4, 2004 in Los Angeles, California. The Timberwolves won 107-104. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and/or using this photograph, User is consenting to the terms and conditions of Getty Images License Agreement. Mandatory Copyright Notice: Copyright 2004 NBAE (Photo by Noah Graham/NBAE via Getty Images) *** Local Caption *** Latrell Sprewell

Indiana Pacers forward Ron Artest is grabbed by fans after he went into the seats during a a brawl with the Detroit Pistons with just 45.9 seconds left in the game in Auburn Hills, Mich., in this Nov. 19, 2004 file photo. (AP Photo/Duane Burleson)

Texas Rangers reliever Frank Francisco, bottom left, hurls a ballboy's chair into the crowd of Oakland Athletics fans during a melee that erupted in the ninth inning, Monday, Sept. 13, 2004 in Oakland, Calif. A woman was hit in the face and injured in the fracas, and Francisco was arrested. The A's won 7-6 in 10 innings. (AP Photo/The Oakland Tribune, D. Ross Cameron)

Defrocked Irish priest Cornelius Horan, right, grabs Vanderlei de Lima of Brazil and knocks him into the crowd during the men's Marathon event at the 2004 Olympic Games in Athens, Sunday, Aug 29, 2004. De Lima, who was ahead of the field with about three miles, continued running but lost his lead and finished third. (AP Photos/Koji Sasahara)

Beverage containers fly toward the car of Jeff Gordon as he drives out of turn four at the Talladega Superspeedway in Talladega, Ala., Sunday, April 25, 2004. Gordon had just won the NASCAR Aaron's 499 race under caution and many fans thought that rival NASCAR driver Dale Earnhardt Jr., had led when the caution came out with five laps remaining. (AP Photo/Phil Manson)

CARLSBAD, CA - FEBRUARY 29: Davis Love III reacts to a missed putt in the first 18 holes of his final round against Tiger Woods during the WGC-Accenture Match Play Championship at the La Costa Resort and Spa on February 29, 2004 in Carlsbad, California. (Photo by Donald Miralle/Getty Images)

Kansas City Royals first base coach Tom Gamboa, lower right, is attacked by two men who jumped from the stands in the ninth inning at Comiskey Park in Chicago Thursday, Sept. 19, 2002. The Royals entire dugout cleared and their bullpen rushed in from the right-field bullpen, with several players jumping on the fans. The two fans were escorted off the field in handcuffs and a White Sox trainer attended to Gamboa. He had a large cut on his forehead, and was holding a towel to his face, but he walked offthe field under his own power.(AP Photo/Ted S. Warren)

Jacksonville Jaguars' Kyle Brady leaves the field after the game with the Cleveland Browns was stopped with 48 seconds left when fans began to throw debris on the field Sunday, Dec. 16, 2001, in Cleveland. Officials later had the teams return to play the final seconds of the Jaguars 15-10 win. (AP Photo/Amy Sancetta)

Toronto Maple Leafs' Tie Domi throws water at a fan from the penalty box in the third period of the Philadelphia Flyers game Thursday, March 29, 2001 in Philadelphia. Moments later, another fan lunged from the second row at Domi and a glass panel broke. Domi grabbed the fan as he tumbled into the penalty box, and it appeared the two threw punches at each other before being separated. (AP Photo/Miles Kennedy)

KRT SPORTS STORY SLUGGED: BAYLESS-COLUMN KRT PHOTOGRAPH BY CHARLES CHERNEY/CHICAGO TRIBUNE (May 18) With one out in the bottom of the 9th inning, the L A Dodger bullpen and bench went into the stands behind the bullpen after Chicago Cubs fans showered them with beer and stole the helmet of catcher Chad Kreuter in Chicago, Illinois. The only real damage done was to the Cubs' ninth-inning momentum, which went cold during the nine-minute melee. (TB) PL KD 2000 (Horiz) (mvw) -- NO MAGS, NO SALES --

Houston Astros Bill Spiers (28) and teammate Craig Biggio (7) take down a fan in right field during the game against the Milwaukee Brewers Friday, Sept. 24, 1999, in Milwaukee. The fan jumped onto the field and attacked Spiers. The attacker was handcuffed and led off the field by Milwaukee County sheriffs deputies. (AP Photo/Morry Gash)

San Diego Chargers linebacker Lewis Bush and other unidentified players cover their heads as they get pelted with ice chunks while they leave the field at Giants Stadium in East Rutherford, N.J., Saturday, Dec. 23, 1995. Angry Giants fans pummeled the players, coaches, officials, and photographers with snowballs and officials threatened the game with forfeiture, but did not follow through with the threat. The Chargers beat the New York Giants 27-17 and earned a berth in the playoffs. (AP Photo/Bil Kostroun)

CHICAGO, IL - SEPTEMBER 28: Chicago Cubs players (L-R) Mark Parent, Shawon Dunston, Howard Johnson and umpire Ed Montague and an unidentified field security officer (back to camera) try to subdue fan John Murray after he charged Cub pitcher Randy Myers, whose head can be seen lower left, 28 September at Wrigley Field in Chicago. Murray, who was arrested and charged with assault and disorderly conduct, charged Myers after he gave up a game-leading home run to the Houston Astros. AFP PHOTO (Photo credit should read JOHN RUTHROFF/AFP/Getty Images)

NEW YORK - JUNE 17: Vernon Maxwell #11 of the Houston Rockets waits at the scorers table to check in during Game Five of the NBA Finals played on June 17, 1994 at Madison Square Garden in New York, New York. NOTE TO USER: User expressly acknowledges that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License agreement. Mandatory Copyright Notice: Copyright 1994 NBAE (Photo by Nathaniel S. Butler/NBAE via Getty Images)

Video grab from Sky TV showing Manchester United's Eric Cantona lunging at a Crystal Palace fan in the main stand after being sent off, during the Premier League match here 25 January 1995 in London. He was restrained by stewards and his colleagues before eventually leaving the field. AFP PHOTO (Photo credit should read -/AFP/Getty Images)

HAMBURG, GERMANY - APRIL 30: World number one tennis player Monica Seles (C) grimaces in pain after being stabbed in the back by an unidentified spectator 30 April 1993. The injury was reportedly not life-threatening. (Photo credit should read PA/AFP/Getty Images)

MILWAUKEE - 1991: Charles Barkley #34 of Philadelphia 76ers dribbles up court against the Milwaukee Bucks during an NBA game in 1991 at Bradley Center in Milwaukee, Wisconsin. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and/or using this Photograph, user is consenting to the terms and conditions of the Getty Images License Agreement. Mandatory Copyright Notice: Copyright 1991 NBAE (Photo by Dale Tait/NBAE via Getty Images) *** Local Caption *** Charles Barkley

Fans storm the field at Chicago's White Sox Park on Disco Demolition night Thursday, July 12, 1979 after the first game of a double header between the White Sox and Detroit Tigers. The promotion by a local radio station turned into a melee after hundreds of disco records were blown up on the field. The second game of the double header was called by umpires who declared the field unfit for play. (AP Photo/Fred Jewell)

Outfielder Rick Monday of the Chicago Cubs dashes between two men in the Dodger Stadium Outfield in Los Angeles, Calif., April 25, 1976, snatching an American flag the men were about to burn. Monday doesn't remember the score or how many hits he got that day at Dodger Stadium. The other details are seared in his memory of a day 30 years ago when Monday became an unlikely hero to many by making the biggest save of his career. (AP Photo/Los Angeles Herald Examiner, James Roark)

An unidentified guard helps Cleveland Indians Tom Hilgendorf after he was hit by a chair during the infamous Beer Night melee June 4, 1974, in Cleveland. (AP Photo/Cleveland Press, Paul Tepley)