Chris Eubank Jr. to stop the fight. Following the bout, Eubank was stripped of the interim WBA middleweight title due to his inactivity since winning it. Eubank then faced Gary "Spike" O'Sullivan in an eliminator to challenge the "de jure" WBA middleweight champion, Daniel Jacobs. Talks resurfaced about a potential fight with Irish boxer Gary O'Sullivan to take on 12 December 2015 at the O2 Arena in London on the undercard of Joshua-Whyte. The fight was well anticipated, as the pair had a history of feuds in the past, with O'Sullivan targeting Eubank on social media. The fight throughout had the pace set
Chris Eubank 20 lbs in weight and challenged Britain's Carl Thompson for the WBO cruiserweight title. Eubank floored Thompson in the fourth round but, as in the first Steve Collins fight, failed to press home his advantage. The fight went the distance, with Thompson's strength and durability eventually telling in the later rounds. Thompson won by unanimous decision, but the closeness of the fight was reflected in the scoring, with two of the three judges giving the fight to Thompson by a single point. A rematch was quickly arranged for three months later and they again fought for the WBO cruiserweight championship