Later tonight, Kell Brook will make a mandatory defense of his IBF welterweight championship against mandatory challenger Errol Spence at Bramall Lane in Sheffield.

Brook (36-1, 25 KOs), returns for the first time since losing the first fight of his pro career, when he was stopped in five rounds by IBF, WBA, WBO, IBF middleweight champion Gennady Golovkin last September at the O2 Arena in London. Brook suffered a fractured orbital bone in the contest and several months were needed to fully recover.

Golovkin's head trainer, Abel Sanchez, believes Brook needs to make it a very rough fight and take away the confidence of Spence in order to win the contest.

"Kell needs to make sure that Spence understands who the champion is. Kell needs to go at him and try to not only out-muscle him, but make sure he takes away Spence Jr's confidence. If Kell sits back and allows this kid to box from the outside, it's going to be a long night," Sanchez told Sky Sports.

"Make sure it's a rough fight. For Kell, its better if it's a rough fight. He needs to get in there and show that he is the champion and hit him the way he wants to hit him. Make sure it's a rough fight. For Kell, it is better if it's a rough fight."

For his part, Dan Birmingham - head trainer of WBC, WBA welterweight champion Keith Thurman - says Brook must pressure early and prevent Spence from gaining any momentum.

"I think Brook needs to put lots of pressure on from the start. Spence is very athletic so Brook needs to make sure he doesn't get into his own style. [Brook] is always thinking ahead, and that makes him so dangerous. I think that is the big thing but he has to stop Spence growing into it," Birmingham said.

"The one thing I like about Brook he is very calm and calculated and picks his shots very, very well. He is a real thinking fighter and is always thinking ahead, and that makes him so dangerous. I think that is the big thing but he has to stop Spence growing into the fight."