Scott Quigg has seen more mistakes in Carl Frampton that he plans to expose in Saturday's fight than were revealed in his rival world champion's last bout.
In Frampton's last fight and second IBF world title defence, unheralded Mexican Alejandro Gonzalez Jr twice floored him in the first round before the Belfast boxer went on to retain his belt via a unanimous points decision.
Frampton's first round crisis in Texas last July -- on the same night Quigg destroyed Spaniard Kiko Martinez in two rounds in Manchester -- may have offered Quigg some encouragement.
But WBA champion Quigg (31-0-2, 23 KOs), 27, is expecting an improved Frampton (21-0, 14 KOs), 29, when they meet at the Manchester Arena and is drawing confidence on the way he swiftly disposed of Martinez compared to Frampton's points [September 2014] and ninth round TKO [February 2013] wins over the same opponent.
"I've always thought he had vulnerabilities and made mistakes which Gonzalez picked up on early on," Quigg told ESPN.
"Gonzalez isn't brilliant, he's lost again since fighting Frampton, and that's the fight I've watched least in preparing for Frampton.
"He was complacent against Gonzalez, he was at his worst, but I'm expecting him to be at his best against me, the Frampton that beat Chris Avalos or Kiko Martinez the first time.
"I've always been confident that I can capitalise on his mistakes and he's got many more mistakes that wasn't exploited in that fight that I will.
"I'm expecting a better Frampton to turn up but I've improved since my last fight, the stuff I've been doing in the gym, and there's no doubt in my mind that my best beats his best.
"He knows I can really hit, he has seen what I did to Kiko Martinez compared to what he did, but he still thinks I fight one way. It's now becoming real to him."
It is the biggest fight of both their careers and one of the most eagerly awaited in Britain in recent years, but Quigg insists he is under no more pressure than he usually is.
"I will be the same as every fight, no extra nerves, because no one can put any amount of pressure on me than I put on myself," Quigg told ESPN. "I don't care how many people are in the arena, or are watching on TV.
"I have a fear of losing and since a kid that's the pressure I have put on myself."