Eubank Jr and Groves put their world titles on the line when they face off in the semi-final of the World Boxing Super Series on February 17.
Groves is by far the more experienced fighter after numerous world title bids and ripped into his opponent’s credentials in a press conference on Tuesday.
‘Junior is terrific at a soundbite, it’s made him Insta-famous and it works for him,’ said Groves.
‘But I’m sorry to say that Junior isn’t good enough, he doesn’t have the pedigree or the ability.
‘You’re Insta-famous. Fantastic short clips on the bag or pads. They look great. You punch from the ankles from the get go.
‘Junior’s been craving the big fights without actually wanting them. He attaches his name to big fights and then they fall through and he boxes at a much lower level.’
Eubank Jr has just one loss on his record, a 2014 defeat to Bill Joe Saunders, and is the IBO super-middleweight champion.
And the 28-year-old has promised to stop Groves inside the 12 rounds.
‘This my biggest fight in terms of profile and hype. At the end of the day I rise to the occasion and the bigger the fight the better I perform.
‘I’m a man of my word – George, you will not see the 12th round. George is on a downward curve but this is my time.
‘I’m a completely different guy to two years ago, a year ago, whereas George is the same guy.
‘I know what’s happened in sparring with George. I’ve felt what he has as a fighter and as a man. I know his weaknesses and strengths.
‘Nothing he has can outweigh the fire and heat that’s going to be brought down upon him.’