Antoine Douglas to fight Gary O'Sullivan on Dec. 16 in Quebec

Antoine Douglas, who recently signed a promotional agreement with Golden Boy Promotions, will face Gary "Spike" O'Sullivan for the WBO Inter-Continental middleweight title in a 10-round bout on Dec. 16 in Laval, Canada.

The fight will serve as the televised co-feature (HBO, 9:40 p.m. ET/PT) to a mandatory world title bout between WBO middleweight champion Billy Joe Saunders and former titlist David Lemieux.

Douglas (22-1-1, 16 KO's), 25, of Burke, Virginia, who once held numerous regional title belts, is riding a three-fight knockout streak since suffering the only defeat of his career, a 10th-round TKO at the hands of Avtandil Khurtsidze in March 2016.

"Fighting on such a great middleweight card on HBO will be a great opportunity," said Douglas. "I've seen some fights of Gary's, and I never underestimate my opponent. I know he's got a good record and that he always comes to fight. I've never been to Canada, so I look forward to expanding my fan base there."

O'Sullivan (26-2, 18 KO's), 33, a United Kingdom native based out of Ireland, is riding a four-fight winning streak culminating with a fourth-round TKO over Nick Quigley in the main event on Golden Boy Boxing on ESPN in September. O'Sullivan has faced some of the top middleweights in the division including Saunders and Chris Eubank, Jr., losing both by unanimous decision and seventh-round TKO, respectively.

"I'm coming off a tremendous knockout win, and that high has carried into my training for this huge co-main event opportunity," said O'Sullivan. "I'm excited to be making my HBO debut on such a tremendous card, and will not disappoint in giving everyone a show. Antoine Douglas should be prepared to face the very best version of myself in the ring."

"The middleweight division is absolutely stacked, and fans will get to see four of the top-tier fighters on one night in Quebec, Canada," said Oscar De La Hoya, Chairman and CEO of Golden Boy Promotions. "While Canelo Alvarez and Gennady Golovkin sit atop the division, these two fights will likely determine their challengers in the near future. Everything is on the line for all these guys."

On the non-televised undercard, rising 130-pound star Ryan "Kingry" Garcia (12-0, 11 KO's) will look to defend his NABF Junior super featherweight title in an eight-round contest against Noe Martinez (10-9-2, 6 KO's).

The 19-year-old native of Victorville, California, is coming off eight knockout victories and will look to defend his title for the second time after earning the title with a spectacular first-round knockout win against Miguel Carrizoza in September and defending it impressively via third-round technical knockout against Cesar Valenzuela in November.