champion

the champion of the entire world in a particular sport

someone who has won a gold medal at the Olympic Games

the champion who is competing to keep their title

the champion of a whole country

the person who is currently the champion

describes a highly skilled and respected champion

the person who holds the title now

a champion who has never lost a match

a boxing champion in the heaviest weight class

someone who was a champion in the past

a champion that everyone agrees is the best

the champion of a state (e.g., in the US or Australia)

emphasizes authenticity and deservedness of the title

a champion who has won the title three times

the champion of the sport of boxing

the champion of the game of chess

a boxing champion in the middle weight class

a boxing champion in the welterweight class

describes the ultimate or highest-ranking champion

someone who was a champion in a previous time

champion in a competition that includes multiple different events, esp. in gymnastics

a champion in an age category for younger competitors

a champion in a combat sport like boxing or MMA

the top-performing jockey of a season or region

the fastest sprinter who is a champion

the action of a champion competing to remain champion

to achieve the status of champion

to be formally named or recognized as the champion

to defeat the current champion in a competition

to win against the current champion

to be officially declared the champion

to find out or establish who the champion is

to have a final match or event to determine the winner