Four-time world champion Brian Viloria will challenge undefeated WBC flyweight champion Roman Gonzalez for his title in the co-feature bout of an Oct. 17 card televised on HBO pay-per-view.

The much-anticipated fight was made official on Tuesday by K2 Promotions and will be held at Madison Square Garden in New York.

"I’ve fought and won on the world’s biggest stages against the best of the best. I’ve prepared my whole life to win at every level of competition from World Amateur titles to the Olympic games to professional world titles," Viloria said in a press release. "And this fight, against Roman Gonzalez, is likely to be my biggest challenge yet. But, it’s Roman’s biggest challenge too. This is the realization of my dreams and I will make the most of it on fight night."

Gonzalez (43-0, 37 KOs) is currently ranked No. 2 in ESPN’s and Ring Magazine’s pound-for-pound rankings behind Floyd Mayweather Jr.

Viloria (36-4, 22 KOs) has won four fights in a row since losing the WBA and WBO flyweight titles in a split decision to Juan Francisco Estrada in April 2013. 

"I know Brian Viloria is a great champion and it will be a hard fight, but I am ready for the challenge," Gonzalez said in the press release.

"I applaud Roman for accepting this fight. Together, we will give boxing fans something special, something they can talk about for a very long time," Viloria said.

The main event is a middleweight title unification bout between Gennady Golovkin and David Lemieux. Tickets ranging from $50 to $500 go on sale Wednesday through all Ticketmaster outlets.