LOS ANGELES - MARCH 28: Michael Jordan #23 of the Washington Wizards drives past Rick Fox #17 of the Los Angeles Lakers during the game at Staples Center on March 28, 2003 in Los Angeles, California. The Lakers won 108-94. 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. (Photo by Robert Laberge/Getty Images)

** RETRANSMISSION WITH ALTERNATE CROP ** Mike Tyson lies on the canvas after being knoked down by Ireland's Kevin McBride in the sixth round of their heavyweight bout, Saturday, June 11, 2005,at the MCI Center in Washington. (AP Photo/Pablo Martinez Monsivais)

25 Nov 1999: Head coach Jimmy Johnson of the Miami Dolphins looks at the scoreboard during the game against the Dallas Cowboys at the Texas Stadium in Irving, Texas. The Cowboys defeated the Dolphins 20-3. Mandatory Credit: Ronald Martinez /Allsport

Hall of Fame pitcher Jim Palmer throws against the Boston Red Sox March 11, 1991 in Bradenton, Fla. Palmer, 45, is trying for a comeback with the Baltimore Orioles. He allowed five hits in two innings in his first spring training start. (AP photo/Rusty Kennedy)

BUFFALO, NY - 1990: Right wing Guy Lafleur #01 of the Quebec Nordiques skates with the puck during an NHL game against the Buffalo Sabres at Memorial Auditorium in Buffalo, New York in 1990. (Photo by: Rick Stewart/Getty Images)

SAN FRANCISCO, UNITED STATES: New Orleans Saints Head Coach Mike Ditka walks along the sidelines after the San Francisco 49ers intercepted a pass from Saints quarterback Heath Shuler in the first half of New Orleans' 14 September game with the 49ers in San Francisco. The 49ers defeated the Saints 33-7. The Saints are now 0-3. AFP PHOTO/John G. MABANGLO (Photo credit should read JOHN G. MABANGLO/AFP/Getty Images)

APR 1991: BJORN BORG OF SWEDEN IN ACTION DURING HIS COMEBACK AT THE 1991 MONTE CARLO OPEN. BORG ATTEMPTED TO DEFEAT TODAYS PLAYERS WITH AN OLD FASHIONED WOODEN RACQUET.

13 Apr 1991: Mark Spitz swims in a 50 meter butterfly race against Tom Jager in Mission Viejo, California. Mandatory Credit: Stephen Dunn /Allsport

Baltimore Ravens defensive back Deion Sanders looks for running room following an interception against the Cincinnati Bengals Nov 27, 2005. The Bengals defeated the Ravens 42-29. Photo by Michael Hickey/WireImage.com

LONG BEACH, CA - AUGUST 16: Jose Canseco #33 of the Long Beach Armada pitches against the Reno Silver Sox during the first inning of the Golden Baseball League game on August 16, 2006 at Blair Field in Long Beach, California. (Photo by Christian Petersen/Getty Images)

SAN DIEGO- JULY 18: Rickey Henderson, who plays baseball for the San Diego Surf Dawgs of the Golden League, an independent professional baseball organization, leads off from first base during a game at Tony Gwyn Stadium in San Diego, California on July 18, 2005. A former player in Major League Baseball, Henderson is attempting a comeback to the Majors at the age of 46.

London, UNITED KINGDOM: US basketball star Dennis Rodman plays for The Brighton Bears during a game against The London Towers in Crystal Palace, London, 15 February 2006. AFP/BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

26 Oct 1951, New York, New York, USA --- 10/26/1951-New York, NY- Action shot of Joe Louis being knocked out by Rocky Marciano in the last fight of Louis' career. --- Image by © Bettmann/CORBIS

Cleveland Indians outfielder Juan Gonzalez watches his double go down the line against the Washington Natonals during a spring training game on Tuesday, March 15, 2005 in Viera, Fla. After spending much of the last two years on the disabled list, Gonzalez is trying to prove he can stay healthy and earn a roster spot on the club. The Nationals won the game 4-3. (AP Photo/Evan Vucci)

Miami Dolphins wide receiver Cris Carter grabs a pass 12/09/2002 at Pro Player Stadium in Miami. The Dolphins defeated the Chicago Bears 30 to 9 to hold the best record in the AFC with three weeks left in the season. Photo by Al Messerschmidt/WireImage.com

07 Aug 1992, Barcelona, Spain --- BARCELONA OLYMPICS: SEMI-FINALS OF THE MEN'S RELAYS, Ben Johnson, Canada --- Image by © AUBERT/CORBIS SYGMA