Alex Arthur has backed Edinburgh to knock Leinster out of the Heineken Cup this Saturday (15 December, kick off 3.30pm) " just hours before he steps into the ring to face Steve Foster in a world title fight.
After denying the Irish Province a bonus point in last Friday's 28-14 defeat in Dublin, Edinburgh can now stop Brian O'driscoll and co from reaching the knock-out stages by recording a win at Murrayfield.
And Edinburgh fighter Arthur, 29, will be hoping a positive result from his hometown team will be a good omen as he defends his WBO super-featherweight interim crown three miles away at Meadowbank.
Arthur said: "I"m not a big rugby fan, but I keep an eye on their results and I like the fact Edinburgh have caused a few surprises while being seen as the underdogs.
"Everyone knows Leinster have got some quality rugby players, but I"m confident the team can make it an Edinburgh sporting double on Saturday by winning the match.
"I"ll be watching it from my dressing room and afterwards I"m sure some of the fans and the players will come over to Meadowbank to watch me fight Steve Foster."
Edinburgh's team boasts literally one of Arthur's biggest fans; 18 and-a-half stone Scotland prop Craig Smith (pictured).
Smith admits Arthur is his favourite boxer and he can't wait to see him rack up a win over Foster at Edinburgh's former ground.
He said: "I"ve been to a few of his fights now and Alex is a really good boxer. He has got a great following and I"ve seen him make a real name for himself.
"I feel he has got what it takes and I just can't see him losing at Meadowbank this Saturday. Like Alex, I"m proud to represent Edinburgh in sport and it always gives me a real buzz watching him win."
The 29-year-old front rower returns to the starting line-up for the visit of Leinster and is planning to make an impact against stellar opposition.
He said: "I"m just happy to be given the chance to play. Hopefully I can make a difference, drive the team forward and make the guys proud."
Edinburgh v Leinster, Saturday 15 December 2007, kick off 3.30pm, Murrayfield
Ticket hotline: 0131 346 5180