 | The always-on-the-go Eric Byrnes rarely leaves a game with a clean uniform. AP |
 | Kevin Garnett has been an inside force since he joined the league in 1995. Jim Rogash/Getty Images |
 | The Colts' Peyton Manning has started 160 consecutive regular season games. Bob Levey/WireImage.com |
Below, we offer a list of tough guys, in alphabetical order, in the four major pro sports:
Baseball
Josh Beckett, Red Sox pitcher
Eric Byrnes, Diamondbacks leftfielder
Carl Everett, Mariners DH
Vladimir Guerrero, Angels rightfielder
Derek Jeter, Yankees shortstop
Russell Martin, Dodger catcher
Mariano Rivera, Yankees closer
Aaron Rowand, Giants centerfielder
Curt Schilling, Red Sox pitcher
Gary Sheffield, Tigers DH
Ty Wigginton, Astros third baseman
Basketball
Ron Artest, Kings forward
Shane Battier, Rockets guard
Bruce Bowen, Spurs guard
Kobe Bryant, Lakers guard
Kevin Garnett, Celtics forward
Allen Iverson, Nuggets guard
LeBron James, Cavaliers guard
Shaquillle O'Neal, Suns center
Jerry Stackhouse, Mavericks gurd
Ben Wallace, Cavaliers forward
Football
Marion Barber Cowboys running back
Tom Brady, Patriots quarterback
Kelly Gregg, Ravens nose tackle
Steve Hutchinson, Vikings guard
Olin Kruetz, Bears center
Ray Lewis, Ravens linebacker
Peyton Manning, Colts quarterback
Steve McNair, Ravens quarterback
Bob Sanders, Colts safety
Steve Smith, Panthers wide receiver
Mike Vrabel, Patriots linebacker
Hockey
Derek Boogaard, Wild left wing
Rod Brind'Amour, Hurricanes center
Zdeno Chara, Bruins defenseman
Chris Chelios, Red Wings defenseman
Jarome Iginla, Flames right wing
Mike Komisarek, Canadiens defenseman
Georges Laraque, Penguins forward
Travis Moen, Ducks left wing
Alex Ovechkin, Capitals left wing
Sami Pahlsson, Ducks center
Dion Phaneuf, Flames defenseman
Sheldon Souray, Oilers defenseman
Anton Volchenkov, Senators defenseman