competitor, opponent

RIVAL
WordClue
FOEopponent, enemy
MILTroe
MUHAMMADAli, boxer
UNDERDOGcompetitor thought unlikely to win
ADVERSARYopponent or rival
CONTESTANTcompetitor
CONTESTANTcompetitor
UNDERDOGcompetitor thought unlikely to win