Amir Khan and Kell Brook have agreed on a unique set of rules regarding the weight of their fight.
The couple finally signed on to meet on February 19 in Manchester after years of unsuccessful attempts to organize a fight.
One of the many issues that had often made things difficult in previous negotiations was the debate over the weight limit for their fight.
It is now confirmed that they will meet at a catch weight of 149 pounds (2 pounds above the standard welterweight limit) and have agreed to a rehydration clause (fight day weigh-in) at 163, 5 lbs.
BOXXER promoter Ben Shalom told talkSPORT’s James Savundra: “Weight has always been a big issue.
“These guys killed themselves for weighing 147 pounds and as you get older it can be difficult.
“Having two or three extra pounds now will make this the fight it should be.”
Asked about the details, Shalom added: “Even I am confused!
“They will weigh 149 pounds the day before.
“They will then weigh in on the same day at 163.5 pounds.
“I think again about mind games, whether Amir thought Kell would gain too much weight or vice versa.
“They both have big penalties in there, which makes it even more interesting.”
Rehydration clauses are not unheard of in boxing, with the IBF applying them to their world title fights and other high profile fighters such as Canelo Alvarez having used them in the past.
This fight is unique in that he weighs 149 lbs and 163.5 lbs, like no other.
Brook has revealed that the penalties for missing the limits are indeed severe.
He told Sun Sport: “If I go over a pound it costs me £ 100,000. Each book costs £ 100,000 so I can’t afford to do that.
“It makes him interesting and exciting, but I’m preparing for him now and waiting for that to be confirmed has already put me in a bad spot.”