Who is the most intimidating athlete of all time?

Some opponents were beaten before the contest started. These are the athletes whose presence alone changed how the other side played.

1

Mike Tyson

Opponents were often beaten before the first bell.

2

Muhammad Ali

Used words as much as fists to unsettle opponents.

3

Sonny Liston

A glare that unnerved a generation of heavyweights.

4

Shaquille O'Neal

So dominant that rules and defences were rebuilt around him.

5

Dennis Rodman

A relentless, unpredictable defensive presence.

6

Lawrence Taylor

The linebacker who changed how offences protect the quarterback.

7

Roy Keane

Manchester United's captain and midfield enforcer.

8

Michael Jordan

Legendary for psychologically dismantling opponents.

9

Marvin Hagler

Marvelous Marvin, a shaven-headed middleweight who fought with cold menace.

10

Dick Butkus

The Chicago Bears linebacker synonymous with punishment.

11

Serena Williams

A competitive intensity that defined an era of tennis.

12

Bill Laimbeer

The Bad Boys Pistons enforcer opponents most disliked facing.