go up against (someone or something)(redirected from go up against them)
go up against (someone or something)
To face a particular competitor, trial, or test. I can't believe I have to go up against the valedictorian for this award—obviously, she's going to win!
go up against someone
to compete with someone; to face someone in competition. She is going up against Rodney in the spelling bee. The champ went up against the challenger in a match last Friday.