Throw down the gauntlet
Throw down the gauntlet
to invite your rival or competitor to a challenge, e.g. a fight or competition, challenge, confront, defy, brave, face up to, dare, test, dispute, contest, object to, oppose:
When the inexperienced photographer threw down the gauntlet, the expect in photography did not have any other choice but to accept the challenge.
Fre: mettre au défi
Fa: به چالش فراخواندن