Usain Bolt set world records, won six Olympic gold medals, eight World Championship golds, but now the 27-year-old sprinter wants to retire ... in three years. First, a confident Bolt plans to defend his Olympic titles in the 100 meters, 200m and 4x100m relay at the 2016 Olympic Games in Rio, saying "if I want to be among the greats of [Muhammad] Ali and Pele and all these guys, I have to continue dominating until I retire." Where does the world's fastest man currently rank among the greatest athletes of all time? Set your rankings!

More: Will Bolt retire after the 2016 Olympic Games?

Greatest athletes of all time

Muhammad Ali

Muhammad Ali

Boxing
- First three-time world heavyweight champion
- Won 22 heavyweight championship fights with 19 successful defenses

Mark Allen

Mark Allen

Triathlete
- Six-time winner of Ironman World Championship
- Won 20 straight triathlons from 1988 to 1990

Usain Bolt

Usain Bolt

Track and field
- Six-time Olympic gold medalist
- Holds the world record in the 100 meters, 200m and 4x100 relay

Jim Brown

Jim Brown

Football
- Averaged 104.3 rushing yards per game, most in NFL history
- Only player to lead the NFL in rushing touchdowns in five seasons

Wayne Gretzky

Wayne Gretzky

Hockey
- Won Hart Trophy as NHL's Most Valuable Player a record nine times
- NHL career and single-season record holder for goals, assists and points

Tony Hawk

Tony Hawk

Skateboarding
- Won 16 X Games medals, including 10 golds
- Won 73 pro events by age 25 (turned pro at 14)

Bo Jackson

Bo Jackson

Football, baseball
- First pro athlete to be named an all-star in two major American sports (MLB All-Star in 1989, NFL Pro Bowl in 1990)
- Won Heisman Trophy in 1985

Michael Jordan

Michael Jordan

Basketball
- Five-time NBA MVP; six-time NBA champion (Finals MVP for all six titles)
- 10-time NBA scoring champ (most in NBA history)

Carl Lewis

Carl Lewis

Track and field
- Nine-time Olympic gold medalist, tied for second-most gold medals all time
- Held world record in 100 meters from September 1988 to June 1991 and August 1991 to July 1994

Willie Mays

Willie Mays

Baseball
- 12-time Gold Glove winner, tied with Roberto Clemente for most by an outfielder
- One of three players in major league history with at least 600 home runs and 300 stolen bases

Pele

Pele

Soccer
- 1,281 professional goals in his career, fourth-most all time
- Only player to win three World Cup championships; youngest goal scorer in a World Cup final at age 17

Michael Phelps

Michael Phelps

Swimming
- Most decorated Olympian of all time with 22 medals
- Only athlete to win eight gold medals in a single Olympics

Jackie Robinson

Jackie Robinson

Baseball
- First African-American player in modern era of major league baseball
- All-Star in six straight seasons from 1949 to '54

Deion Sanders

Deion Sanders

Football, baseball
-Only player to ever hit a major league home run and score a touchdown in the NFL in the same week
- Inducted into the Pro Football Hall of Fame in 2011

Tiger Woods

Tiger Woods

Golf
- Has won 14 majors, second-most all time- 10-time PGA Player of the Year, most all time

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