Kell Brook is not planning to make the same mistake as Liam Williams.
Last week, Williams finally stepped in the ring with his bitter rival Chris Eubank Jr.
There are many who felt Williams was fueled by emotion, as he went right after Eubank - and tasted three knockdowns in the first four rounds.
On February 19 in Manchester, Brook will face a bitter rival of his own, Amir Khan, in a long-awaited showdown of former world champions.
"I watched the (Liam) Williams and (Chris) Eubank Jr fight [Eubank Jr won a unanimous decision over Williams in Cardiff] and took something from that, it's a little bit similar to mine because I know they don't like each other," Brook told Sky Sports.
"Williams went in there with a lot of rage. I can't bring that rage and emotion in - as hard as it's going to be I've got to stay professional and keep them behind me while I go in and be professional. There's going to be a lot of emotion, it's been a long time coming but I've got to be professional. I've got to go out there and do what we've planned to do."
Brook is not looking for a decision victory.
He's gunning to stop Khan inside the distance. Khan has been out of the ring since July of 2019, when he easily defeated Billy Dib.
"We've trained for 12 hard rounds, but we don't get paid for overtime in this game," Brook said. "I'm looking to finish him. I don't want to go 12 rounds, I want to hurt him, I want to finish him.
"If he somehow manages to get through it, it's going to be a one-sided fight for me winning on 12 rounds."
