Kell Brook is the more experienced fighter and the defending welterweight world champion. The British star has taken the best shots a middleweight knockout artist could land and never went down.

Many believe Brook will return as a junior middleweight. No matter what happens, Thurman expects Spence to capture the IBF belt. "One way or another, Errol Spence is getting that title.

LONDON (Reuters) - Britain's Kell Brook will defend his IBF welterweight world title against mandatory American challenger Errol Spence Jr. at Sheffield United's Bramall Lane ground on May 27.