The last-eight winners will progress into the semi-finals, which are due to be staged early in the new year, with the last two standing going toe-to-toe in May next year for the trophy. He chose 2006 Commonwealth games light-welterweight gold medallist Jamie Cox.
But the real shock of the draw was Chris Eubank Snr selecting unsafe Turkish fighter Avni Yildirim - potentially for his son to face in the last eight.
Groves, was the top seed in the WBSS' super middleweight tournament, selected undefeated countryman Jamie Cox as his first opponent.
He opted for Swede Erik Skoglund and said: "I think stylistically, Erik is the best fight for me".
This set the stage for the fourth quarter-final between fourth-seed Juergen Braehmer and undefeated USA challenger Rob Brant. "I really believe this has an opportunity to become the brand in the sport of boxing, the kind of tournament fighters really want to participate in because it will elevate their exposure and it will elevate their careers".
"I picked him for my fans", Usyk, who will be making his third title defense, said of picking Huck, one of the most well-known and best fighters in the history of the division. I've been given one off the tournament and I know 100 per cent it will happen. "I look forward to the start of the tournament, and I am curious to find out when and where the fight will take place".
Groves opts for fellow Brit in Super Series
This left Olympic gold medal victor Oleksandr Usyk, the first seed, with Marco Huck, Dmitry Kudryashov and Perez as potential opponents.
Unbeaten Usyk, the 2012 Olympic gold medal victor has won ten of his twelve professional fights by stoppage. "Hence, we are proud to put the WBC Diamond Championship on the line, which marks the biggest honour the WBC can grant".
WBC champion Mairis Briedis will face Cuban Mike Perez, who recently moved down from heavyweight to compete in the cruiserweight division. The final fight is between unbeaten IBF champ Murat Gassiev and mandatory challenger Krzysztof Wlodarczyk.
But they could meet in the latter stages, with Saint George's WBA world title at stake.
This tournament will pit the best against the best, and the WBC have officially announced the victor in each weight class will receive their diamond championship.More news: Lewis joins elite company as Windies beat India in Twenty20