The Biggest Headcases in Sports

As many influential individuals in sports continue to hone their legacies and invigorate their cities, there is a collection of controversial figures who garner just as much attention away from the sports realm as they do within it.

From consistently insane outbursts to classless temper tantrums, these athletes and higher-ups have yet to calm their nerves and control their eccentricities.

Their entertaining, yet inexcusable actions have earned these icons a reputation that seems synonymous with headcase.

While they try to rid themselves of this title, let's take a look at the biggest headcases in sports.

Enjoy.

20. Nyjer Morgan

With a degree of narcissism, Milwaukee Brewers scrappy outfielder Nyjer Morgan has yet to disappoint curious cameras during potentially ordinary interviews.

From fighting the entire Marlins squad to ferociously throwing his glove down after a missed catch and allowing an inside-the-park home run, the perplexing "Tony Plush" continues to cause bewilderment.

19. Albert Haynesworth

While his stomp of center Andre Gurode was surely despicable and thoroughly baffling, this hefty defensive gargantuan's snowball towards mediocrity has been greatly dissected.

After signing a seven-year, $100 million contract with the Washington Redskins in the 2009 offseason, Albert Haynesworth spent more time basking in his own luxury than he did deflating running backs and studying schemes.

Missed practices, failed conditioning programs and a lack of desire led to the dismissal of a promising career.

18. Serena Williams

She may have 27 Grand Slam titles, but 30-year-old Serena Williams seems to be getting a bit too old for these types of outbursts.

As she continues her prosperous journey, the fiery younger sister of Venus keeps exciting hopeful fanbases as they cling to their seats in preparation of the next tantrum.

17. Manny Ramirez

This was perhaps the one instance in which MLB legend Manny Ramirez was acting correctly.

Despite 555 home runs and more than 2,500 RBI, the two-time World Series champion and former Red Sox outfielder continues to attract attention for all the wrong reasons.

Several drug policy violations, phone calls during pitching changes and sporadic meltdowns have presented the media with fuel for the fire. 

16. Tony Stewart

The only driver in history to win a championship in both IndyCar and NASCAR, Tony Stewart must have a confidence that can't be disturbed.

His arrogant and impatient aura matched with a propensity for on-track fights have continued to hinder an otherwise prolific career.

15. Keith Ballard

While he deserves credit for leading his team in hits during his first five years in the league, hard-nosed NHL defenseman Keith Ballard can't possibly be forgiven for this impulsive behavior.

Goalie Tomas Vokoun didn't quite agree with his teammate's obviously natural reaction.

14. Milton Bradley

"I feel love for me, because I love me."

Temper tantrums, argued calls, arrogant celebrations and criminal charges don't hold a candle to Milton Bradley's baffling comment during this interview regarding his lack of appreciation for Chicago Cubs fans.

He should've attempted a career in manufacturing board games instead.

13. Andy Roddick

He may have the hardest serve in sports at 155 mph and a sexy WAG by his side in Brooklyn Decker, but tennis star Andy Roddick never seems satisfied.

A former World No. 1, Roddick will essentially argue any call he pleases.

12. Ozzie Guillen

Simultaneously beloved and despised for his exuberantly passionate antics on the field and his numbing honesty away from it, new Miami Marlins manager Ozzie Guillen certainly left his mark on Chicago before finishing his tenure as White Sox manager.

Since becoming the first Latino manager in major league history to win a World Series in 2005, Guillen has yet to keep his excited mouth shut.

11. Pepe

As if fans need any more proof that Brazilian-born Portuguese footballer Pepe has several screws that need tightening, his affinity for the verbal exchange is quite clear during his battle against legendary footballer Lionel Messi.

With perhaps the most aesthetically-pleasing name in football, Pepe has a certain pep in his step that can't be ignored.

10. Kyle Busch

Following this loose tossing of vicious profanities, Kyle Busch surely had to deal with a harsh phone call from his disappointed mother.

While he does have 24 wins across the top three Nascar series, being cited for driving 128 mph in a 45 mph speed limit zone doesn't quite garner optimism from fans.

9. Mark Cuban

Having been charged at least $1,665,000 for 13 incidents of criticizing referees and league officials during his tenure as the owner of the Dallas Mavericks, the exuberant Mark Cuban never fails to surprise annoyed fans.

Once despised for his uncontrollable nature, the Cubes is now revered for building a perennial winner in Dallas.

While word association routinely involves one-word answers, Cuban once again mixes in his own flavor.

8. Gennaro Gattuso

From back-hand slapping Ajax striker Zlatan Ibrahimovic to taunting Schalke's midfielder Christian Poulsen, Italian footballer Gennaro Gattuso never ceases to amaze exhilarated fans.

Seemingly a loose cannon, the Milan star is often moments away from sparking chaos.

7. Chael Sonnen

Considering his squeaky voice doesn't quite match his juiced appearance, Chael Sonnen seems destined for a career in stand-up comedy when he's finished with MMA.

Ranked as the No. 2 middleweight in the world by Sherdog, Sonnen never shies away from humorous sound bites, trash talks and brutal honesty.

The fans continue to feast on every pretentious statement.

6. Ron Artest

Once known for his aggressive defensive prowess and instigating tactics, the man now ironically referred to as Metta World Peace seems to have changed his ways.

But fans still haven't forgotten his brawl at the Palace, numerous attempts at a music career and constant nagging.

One might even believe the sports world misses Ron Artest's antics.

5. Rex Ryan

From a humorous foot fetish to an inability to stop guaranteeing a Super Bowl victory, Gang Green coach Rex Ryan has certainly left his mark during his short time so far in New York.

While he's certainly changed the culture of the Jets, his chatty demeanor and arrogant air continue to rub opponents the wrong way.

4. Mario Baolotelli

From driving into a women's prison in Italy to using his iPad on the substitutes' bench, the allegations following the quirky, yet talented Mario Balotelli are seemingly endless.

The attention surrounding the Manchester City striker's enigmatic personality seems to pale in comparison to the laughs resulting from his inability to put on a training bib.

His bathroom manners don't seem to be embraced, either.

3. Sean Avery

There is arguably no NHLer more despised by the entire sports world than notorious instigator Sean Avery.

While his "sloppy seconds" comments were obviously mind-boggling, it's been his overall arrogance and button-pushing demeanor that continues to irk even the most laid-back individuals in sports.

2. Carlos Zambrano

As the only National League pitcher with at least 13 wins in each year from 2003 to 2008, Venezuelan phenom Carlos Zambrano was seen as the next dominant hurler by exhilarated Chicago fans.

His early promise on the Cubs was eventually shadowed by epic temper tantrums and scuffles with teammates, as well as a thorough lack of respect for any umpire behind home plate.

Zambrano now gets a clean slate with the Miami Marlins as he tries to resurrect a once-potent career.

1. Floyd Mayweather Jr.

While his boxing prowess is quite apparent, undefeated boxer Floyd Mayweather Jr.'s ability to put himself on a pedestal is even more obvious.

As Brian Kelly progresses through his comical interview of the legendary fighter, Mayweather continues to crumble under the large spotlight he has created for himself.

Only one other interview can possibly sum up his controversial career more than this lovely exchange.