One of the most dominant pitchers ever, Clemens was an 11-time All-Star selection and 7-time Cy Young Award winner during his 23 year career.

In 2005, however, former player Jose Canseco alleged that Clemens used steroids during his time in the majors. The pitcher's name was subsequently mentioned in the 2007 Mitchell Report about steroids in baseball. Clemens has denied all allegations. On Aug. 19, 2010, a federal grand jury indicted Clemens on perjury charges stemming from his testimony in a Congressional hearing.

After being selected with the No. 1 overall pick out of USC in 1969, Simpson made six Pro Bowls with the Buffalo Bills. The former Heisman Trophy winner was also named the 1973 NFL MVP when he rushed for a then-record 2,003 yards.

In 1994, Simpson's ex-wife and friend were found dead outside her home. After a highly publicized trial, the jury delivered a very controversial "not guilty" verdict. In 2007, Simpson was again arrested for his part in a Las Vegas armed robbery. This time, he was convicted and sentenced to a minimum of nine years in prison.

Since his win at the Masters in 1997, Woods has won 14 major championships, just four behind Jack Nicklaus for the most all-time. He is widely recognized as one of the greatest golfers ever.

In late 2009, though, Woods was involved in a mysterious car accident and was revealed to have engaged in extensive extramarital affairs. Woods took an indefinite break from golf but returned in time for the 2010 Masters.

During his playing career, Rose racked up an astounding 17 All-Star appearances, while setting career records for hits (4,256) and games played (3,562).

In 1989, evidence arose that Rose may have bet on baseball games, and new commissioner Bart Giamatti placed Rose on baseball's permanently ineligible list. Since then, Commissioner Bud Selig has reportedly considered reinstating Rose numerous times but has taken no action.

In 1986, Iron Mike became the youngest undisputed world heavyweight champion when he defeated Trevor Berbick via TKO.

Expectations for Tyson soared, but he was upset by huge underdog Buster Douglas in 1990 by a knockout. The next year, Tyson was arrested and convicted for the rape of an 18-year-old girl and spent three years in prison. After his release, Tyson became more well known for his eccentric personality than his former boxing prowess. He has since declared bankruptcy.

Bonds boasts one of the most impressive baseball r‚sum‚s in history, holding both the career and single-season home run records to go along with seven career MVP awards.

Known also for his surly demeanor, Bonds has been in legal trouble since 2003, when he was implicated in the Bay Area Laboratory Co-operative (BALCO) scandal. Bonds' trainer was alleged to have supplied anabolic steroids to numerous baseball players. Bonds has since been charged with perjury and obstruction of justice, stemming from claims that he lied under oath about his steroid abuse.

During the 1910's, Jackson was one of the best hitters in baseball. He hit .408 his rookie year, and posted a .356 career average.

After his White Sox unexpectedly lost the 1919 World Series, Jackson and teammates were alleged to have thrown the series for gambling purposes. Jackson was acquitted by a jury, but Commissioner Kenesaw Mountain Landis suspended him and his teammates for life in an attempt to clean up baseball's image.

Arguably the greatest defensive player in NFL history, Taylor was a 10-time Pro Bowler and won the 1986 NFL MVP award. He was inducted into the Pro Football Hall of Fame in 1999.

Taylor admitted to using cocaine during his playing career, though, and was suspended for 30 days in 1988 for failing two drug tests. After retirement, Taylor went through drug rehab twice before finally getting clean in 1998. In May 2010, however, Taylor was arrested for allegedly having sex with a 16-year-old girl. He denied the charge.

One of the best players in the NBA, Bryant has been an All-Star every year since 2000 and was named NBA MVP in 2008.

In 2003, Bryant was accused of sexual assault by a hotel employee in Eagle, Colo. Bryant admitted to committing adultery, but maintained that the relationship was consensual. The charges were dropped when Bryant's accuser refused to testify.

In 1998, McGwire and Sammy Sosa captivated the baseball world with their assault on Roger Maris' single-season home run mark, and McGwire finished the season with a record 70 home runs.

McGwire was linked to steroid use throughout his career, and in 2010 he admitted to using performance-enhancing drugs during his playing days.

The Round Mound of Rebound had a unique skill set on the basketball court. Barkley is one of just five players to finish his career with 20,000 points, 10,000 rebounds and 4,000 assists.

Off the court, though, Barkley always seemed to find controversy. In 2007, he admitted that he had lost approximately $10 million gambling throughout his career. On Dec. 31, 2008, Barkley was cited for a DUI with his blood-alcohol level nearly twice the legal limit.

Becker won six Grand Slam singles titles throughout his career, including three Wimbledon championships. The German was inducted into the International Tennis Hall of Fame in 2003.

In 2002, though, Becker was convicted of tax evasion by German courts, a result of failing to pay approximately 3 million euros or $3,613,500 in taxes. Becker eventually confessed and was sentenced to two years probation.

Knight won three national champions and was named Big Ten Coach of the Year six times during his 29 years at Indiana. He was inducted into the Basketball Hallf of Fame in 1991.

Knight's temper got him in trouble, though. In 1985, he threw a chair across the court in protest of a referee's call. In 1997, Hoosier player Neil Reed alleged that Knight grabbed his neck and choked him during practice. Knight was fired by Indiana in 2000.

Irvin won three Super Bowls during his time with the Cowboys and was inducted into the Pro Football Hallf of Fame in 2007.

Off the field, Irvin had trouble staying out of the police blotter. In 1996, he was arrested for cocaine possession at his 30th birthday party. Irvin's legal troubles did not stop when he retired, and in 2005, he was pulled over and cited for possession of drug paraphernalia. Irvin said the objects in question were his brother's and that he was trying to throw them out. In 2007, Irvin was accused of sexual assualt. No criminal charges were filed, but a civil suit is pending.

Thomas was a 12-time All-Star with the Pistons and won two NBA titles with the team. In 2000, Thomas was inducted into the Basketball Hall of Fame as a player.

After retirement, though, Thomas decided to go into coaching. After three moderately successful years with the Pacers, Thomas was hired as President of Basketball Operations by the Knicks. He quickly became unpopular with New York fans by trading away high draft picks for mediocre players such as Eddy Curry and Zach Randolph. Thomas became the Knicks' head coach in 2006, and led the team to two of the worst seasons in franchise history before being fired in 2008.

In 2007, Thomas and Madison Square Garden were sued by an employee for sexual harassment. Madison Square Garden was ordered to pay $11.6 million, one of the largest sexual harassment judgments in history .

Broadway Joe became famous for putting the AFL on the map, leading the Jets to a victory over the Colts in Super Bowl III and paving the way for the AFL-NFL merger in 1970. Namath was elected to the Pro Football Hall of Fame in 1985.

Unfortunately for Namath, he gained Internet fame in 2003. While being interviewed during a Jets game by ESPN's Suzy Kolber, a clearly intoxicated Namath repeated that he wanted to kiss Kolber. Later, he admitted to having a drinking problem and entered an alcohol treatment facility.

In his first World Cup in 1998, the Frenchman made his mark on international soccer. Zidane scored two goals in the final against Brazil to lead his country to a World Cup title on their home soil.

Eight years later, Zidane found himself in another World Cup final, this time against Italy. He had previously announced that the match would be his last as a professional, and his seventh minute penalty kick was the only French goal as the match entered extra time tied at one. Twenty minutes into the extra period, though, Zidane unleashed a vicious headbutt on Italian defender Marco Materazzi, who Zidane alleges made a comment about his family. Zidane was sent off with a red card, and the French lost in a penalty shootout.

Widely recognized as one of the best players in baseball, Rodriguez holds the record for the largest contract in baseball history with his 10-year, $275 million deal with the Yankees.

Throughout his career, Rodriguez denied using performance-enhancing drugs several times. In 2009, though, Rodriguez admitted to using steroids between 2001 and 2003.

Coming to the Wizards in 2003, Arenas quickly became a fan favorite, leading the team to its first playoff series victory in franchise history.

In late 2009, though, Arenas admitted to storing unloaded firearms in his locker. He was suspended for the season and sentenced to two years probation.

Bertuzzi broke out for the Canucks in 2001-02, finishing third in the NHL in scoring with 85 points. He followed that up with a 46 goal season in 2002-03.

However, Bertuzzi's most memorable incident came on March 8, 2004 in a game against Colorado. In retaliation to a previous hit, Bertuzzi took down the Avalanche's Steve Moore from behind. Moore was seriously injured, and the NHL suspended Bertuzzi indefinitely. Bertuzzi was also charged with criminal assault and sentenced to one year probation.

Jones won five track and field medals at the 2000 Olympics, a record for a female athlete.

In 2007, she admitted to using performance-enhancing drugs and was stripped of all her Olympic medals.

Gooden made his major league debut with the Mets in 1984 at the age of 19. Armed with a rocket fastball and a sweeping curveball, Gooden won the 1984 Rookie of the Year award and the 1985 Cy Young Award.

His legal problems started in 1986, though, when he was arrested for fighting with police officers. A year later, he was arrested for cocaine possession and entered a rehab facility, missing a large portion of the season. Since he retired in 2001, Gooden has been arrested numerous times, mostly for alcohol-related offenses.

Pitching for the Tigers, McLain posted a 31-6 record in 1968, making him the last pitcher to win 30 games in a season. he was also named American League MVP that season.

McLain ran into gambling trouble later in his career. After he retired, he was arrested and imprisoned for drug trafficking (cocaine), embezzlement and racketeering.

Strawberry was a key contributor on the powerful Mets teams of the 1980s and was named an All-Star eight times during his career.

Strawberry was suspended for his involvement with cocaine in 1995. Since his retirement in 1999, he has also battled an addiction to painkillers.

Terry is one of the most famous players in the English Premier League and has captained Chelsea to Premiership titles in 2005, 2006 and 2010. He was named captain of the English national team in 2006.

In 2010, though, it was revealed that Terry, a married man, had a four-month affair with former teammate Wayne Bridge's ex-girlfriend. The story blew up in the English press, and Terry was stripped of his England captaincy in February 2010.

In 2003-04, Ron Artest had the best year of his NBA career. He was selected to his first All-Star Game and was named NBA Defensive Player of the Year.

The next fall, though, Artest made his mark on NBA history in a less positive way. Towards the end of a Pacers win in Detroit, Artest got into an altercation with Pistons center Ben Wallace. Just as the fight was breaking up, a fan threw a drink at Artest, and Artest ran into the stands after the fan. A massive fight between players and fans broke out, and nine spectators were injured. Artest was suspended for the rest of the 2004-05 season without pay.