Champion
Winner
Synonyms: Winner, defending champion, prizewinner, victor, victor ludorum, champ, number one, title-holder, gold medallist, cup winner, conqueror, titlist, and top dog.
Advocate
Synonyms: Advocate, promoter, supporter, torchbearer, defender, upholder, exponent, sponsor, pleader for, propagandist for, fighter for, crusader for, apostle, missionary, plugger, proponent, proposer, standard-bearer, flagbearer, protector, backer, patron, prime mover, campaigner for, lobbyist for, battler for, apologist for, evangelist, and booster.
Knight
Advocate
Synonyms: Advocate, plead for, defend, uphold, back, ally oneself with, stand up for, campaign for, fight for, crusade for, propose, vouch for, stick up for, plug, promote, hold a torch for, protect, support, espouse, stand behind, take someone's part, lobby for, battle for, take up the cudgels for, sponsor, second, and throw one's weight behind.
Example Sentences
She trained hard to become the champion of the tournament.
He is a champion for environmental conservation efforts.
The team celebrated their victory with their champion.
They crowned the new champion after a thrilling final match.
She is a true champion of equality and justice.