The two rivals have been going back and forth verbally for three years and things took a bitter tun earlier this year when Benn was the recipient of an assault by Eubank Jr who smashed an egg in his face.
The fight has received plenty of action in the betting world and early indications show that Benn is the fighter who is being backed.
The Essex man begins the contest a slight underdog, but his unbeaten record and explosive style has caught the eye of many, and they believe a shock can take place.
In Eubank Jr, Benn is facing an experienced operator who has competed at the highest level, and he is also making a huge leap in weight as he fights at middleweight for the first time.
Heading into their first meeting, Benn was in red hot form but since an adverse finding in his drug test before the fight, his activity has decreased.
The two fights he has had have been lacklustre affairs that have both gone the distance.
Has time away from the ring impacted Benn or has the fight to clear his mane had a detrimental effect on his performances.
Against Eubank Jr, Benn cannot afford to perform the way he has in his last two contests. This is a significant test for him and could be end up being the landmark moment of his career.
Assessing both fighters, it appears that Eubank Jr is the man with the most attributes to win this contest even though a Benn victory would not be a colossal shock.

Eubank has proven he can take out top operators plenty of times and he has recorded two second half stoppages in his last two fights.
DAZN Bet have him to win the fight in rounds 10-12 at 6/1 and that looks excellent value as Benn fades in the final stages.
The Irishman has a reputation for ripping up trees in American gyms, but his record is still missing a big name.
Could Smith be that man? The Liverpool man is a surprising underdog despite his extra pedigree and the 18/5 for him to score a stoppage looks tempting.
McKenna may be special, and a win here could set him on his way to becoming that, but with Smith tried and tested at a much higher level than this, his price is the one that has the most appeal.
All prices are correct at 11:15am on Friday April 25.
Recommended bets are advised to over-18s.
Fight fans are in for a treat at the end of April / start of May, with three amazing fight cards within seven days - and DAZN PPV is the only place to watch them all.
Arch rivals Eubank Jr and Benn finally go head-to-head to start the exhilarating week, with PPV prices at £19.95 in the UK; $24.99 in the US; €24.99 in Europe.
Garcia vs. Romero and Canelo vs. Scull fight nights follow, which will both be exclusively on DAZN. Fight fans can purchase either fight individually for $59.99 US; £/€21.99 UK/IRE; ROW - $24.99 per PPV or take advantage of the DAZN Knockout Weekend Bundle where both fights can be purchased for $90 US; £34.99 in the UK and €34.99 in Europe .