Luke Campbell and Shane McGuigan have supported each other over shared family tragedies in the build-up to the former's clash with Vasyl Lomachenko.
Trainer McGuigan, son of boxing legend Barry, lost his sister Danika to leukemia last month at the age of 33.
And two years ago, just a fortnight before his world title defeat by Jorge Linares, Campbell's Bernard passed away following a 12-month battle with cancer.
Ahead of the clash of the 2012 Olympic gold medalists in London on Saturday, McGuigan said: "Having the fight to focus on has helped. Working with Luke, who suffered a similar loss, has been good."
Campbell, who has worked with McGuigan for a year following a sting in Miami, added: "It's definitely good to keep his mind focusing on something else.
"The gym is a team and we're all there to support each other and be there for each other when needed."
McGuigan is the man tasked with coming up with a game plan to beat Lomachenko.
The Ukrainian has won world titles in three weight divisions despite having just 14 professional fights.
And McGuigan added: It's very, very hard to prepare for Lomachenko; he's southpaw, and has such good speed and attributes.
"I've watched a hell of a lot of tape, as normal, and the thing is he looks different in different fights so you've got to give him respect.
"We have to be very, very sharp with our feet early on. We need to be ready and responsive and not let ourselves get settled because as soon as you start doing that that's when you play into his hands."
Lomachenko was also an outstanding amateur, winning all but one of his 397 fights, but McGuigan believes his extensive un-paid career means his body is beginning to tire.
He said: "He's very much at the top of the hill, maybe just over. He's 31 and had 420 fights, that's a lot of training camps.
"Since he turned professional he's been doing 12 rounds and your body goes through a lot preparing. I know his knuckle's gone and his shoulder's gone and he's had certain things gone on in his camp.
"He's probably not able to do all the training, he's having to do low intensity training because he's had so much wear and tear."
