The 29-year-old Londoner will face the victor of next weekend's bout in Germany between his undefeated countryman Callum Smith and Jurgen Brahmer in the final, which is scheduled for June.
Afterwards Groves: 'It was a terrific fight for the fans, well done Chris Eubank Jr; he didn't lie when he said he was going to grit it out.
Unbeaten in 23 fights, with 17 knockouts (74 per cent) and freakishly tall for a super middleweight at 6ft 3ins, the tournament may have come at the ideal time in his career.
The two British middleweights faced off in what was one of the most eagerly-anticipated domestic clashes in quite some time, with the IBO and WBA super-middlewight belts on the line in addition to the aforementioned place in the Super Series finale. However, there were rumors after today's fight that Groves may have fractured his shoulder which could play hobs with the well-laid plans of the WBSS organizers. The fighters went toe-to-toe in the eighth and again in the last two rounds when Eubank was desperately throwing for the fences.
Groves comes into the event as the bigger man, the current champion, and with the experience behind him which should mean he enters the ring full of confidence.
Eubank suffered his second defeat in 28 fights. Just ask the aforementioned Froch.
Prediction - George Groves to win on points.
Eubank Jr was not knocked down, though Groves was frustrated there was no count when his opponent fell to his knee in the 10th round and the cut he sustained may have forced him to try and change the fight's course with a wilder approach.