Brook is also trained by Dominic Ingle, who recently teamed up with Saunders as he prepares for the second defence of his WBO World Middleweight Title.
The Hatfield southpaw hopes to face the winner of Canelo Alvarez v Gennady Golovkin, who square off in Las Vegas just a few hours after Saunders’ bout at the Copper Box Arena.
In September 2016, Brook stepped up in weight to take on ‘Triple G’, but Ingle threw in the towel in the fifth round after Brook sustained heavy damage to his right eye.
Should Saunders meet Golovkin soon, then perhaps he will ask his Sheffield gym mate for a few words of advice.
Saunders is in tremendous physical shape for his fight with Monroe Jr, and has praised his new coach for the training methods at the Ingle Gym.
“Dom reminds me in a way of my first trainer Jimmy Tibbs,” said Saunders. “He will take no nonsense at all, he doesn’t care who you are – whether you are a superstar or a fly on the wall in the gym.
“He treats everyone the same, but training is training and work is work. That is the way he looks at it and that is what I need.
“Myself and Dom have got a good natural respect for each other. In this game it is very hard to find someone you fully trust, but I absolutely trust him and give him everything I’ve got in the boxing side of it – every bit of trust I’ve got.
“I have put my career into his hands and it is working for me so far.”
Elsewhere on an action-packed card Ilford Light-Heavy powerhouse Anthony Yarde fights for the Vacant WBO Inter-Continental Title; teenage Heavyweight sensation Daniel Dubois takes on AJ Carter for the Vacant Southern Area strap in only his fifth contest; knockout artist Joe Pigford fights for the Vacant WBO European Super-Welterweight title.
Some of the very best up-and-coming prospects in the country including Welling Super-Featherweight Archie Sharp; Ilford Super-Bantamweight Lucien Reid; Fulham Super-Middleweight Zak Chelli, New Malden Super-Middleweight Lerrone Richards and Erith Flyweight Jake Pettit feature. Ilford Welterweight Hamza Sheeraz; Tamworth Light-Heavyweight Ryan Hatton and Ilford Super-Middleweight Umar Sadiq all make their highly-anticipated pro debuts.
Tickets for Saunders vs. Monroe Jr priced at £40, £50, £70, £100, £150, £200 and £250 (VIP/Hospitality) are available from: