Hatton has gone 5-1 with three knockouts since. But one victory - over Luis Collazo - was controversial in that many thought Collazo won. A decision over Juan Urango was less than awe-inspiring. And there was a 10th-round technical-knockout loss to Floyd Mayweather Jr. and a lopsided, yet unimpressive, decision over Juan Lazcano in his past two fights.
Hatton was on cloud nine after taming the hard-hitting Tszyu. But that shine has definitely lost some luster. During the promotion for his fight tonight against Paulie Malignaggi (on HBO) at MGM Grand in Las Vegas, Hatton was quoted in several publications as saying he would retire if he doesn't win.
Hatton, just 30, was asked this week to clarify.
"I'm not seriously thinking about retirement," said Hatton, of Manchester, England. "It is something I don't want to do. But in my heart, I should beat him and I believe I can do it in good style. I'm not taking anything away from Paulie. He has got fantastic skills and he is fun to watch.
"But I just look at what he's got in his arsenal and what I've got in mine. If I don't beat him ... a fighter has to be honest with himself. I lost to Mayweather. And the fight with Collazo, I had a bad chest infection.
But that was not the performance I expected from myself. I would just have to look at myself a bit closer."
One thing that could be affecting Hatton is his beer-drinking between fights, during which time he blows up as much as 40 pounds.
His new trainer, Floyd Mayweather Sr., has told Hatton he needs to stop that. Hatton has said that isn't going to happen.
Moreover, Hatton (44-1) believes that his real problem has been the mind-set with which he came away from the Tszyu fight.
"I think ever since I bulldozed Kostya Tszyu, I thought I could bulldoze everyone and you can't bulldoze everyone, not at this level," Hatton said.
"Kostya Tszyu had that big, massive right hand and the way I stopped him from using that was that I moved in so quickly he didn't have a chance to."
Hatton said that mentality caused him to forget about his boxing skills. He appeared to be out-boxed against Collazo, a slick southpaw. Hatton swung and missed so often against Mayweather Jr., he looked downright amateurish.
But Mayweather Sr. has reminded Hatton that he can be that attacking power hitter - he has 31 knockouts in 45 fights - and still utilize his boxing skills.
"I never tried to take nothing from Ricky as far as his style, because I feel he should be aggressive," Mayweather Sr. said. "I want him to be aggressive, but I want him to be smart aggressive. You ain't got to get be beat up because you are an aggressive fighter.
"You slip punches, you slide away from punches. He said he couldn't move his head and punch at the same time, but now he's been able to move his head and punch."
Hatton parted ways with longtime trainer Billy Graham in July. Versions reported online by various British publications initially suggested the split was amicable. Then Graham came out and said he was fired. When asked Tuesday to discuss the specifics of that split, Hatton respectfully declined.
That said, hiring the elder Mayweather to work his corner was a good move. If anyone can help Hatton, it's the man who refers to himself as "the best trainer in the world."
"What Floyd has reminded me of is that there have been two Ricky Hattons," Hatton said. "I have shown very good boxing ability. I have got it in me, but I forgot it. ... Floyd just brought out what I had locked up in the locker."
Malignaggi isn't buying any of it. The fast-talking 27-year-old from Brooklyn suggested that Hatton was never as good as people thought.
"His resume is full of big names, but they were all 100 when he fought them," said Malignaggi, who is 25-1 with only five knockouts.
"If I fought Aaron Pryor today, I'd beat the (daylights) out of Aaron Pryor. The only hungry fighters he fought in his whole career when they were in their prime were Floyd Mayweather Jr. and Luis Collazo.
"Paulie Malignaggi is only going to the third fighter he will have fought in their prime."
Tszyu was 35 when he was taken apart by Hatton. Not only was Tszyu still very close to his prime, he was in the top 10 of most respected pound-for-pound polls. Tszyu has not fought since that drubbing.
Malignaggi also bragged about his speed, saying that Hatton won't be able to handle it any better than he did the speed of Mayweather Jr. and Collazo.
Mayweather Sr. found all of Malignaggi's boasting amusing.
"I have to laugh," the elder Mayweather said. "This kid is going to get beat to death. That guy can't fight, man."
If that's true and Hatton loses, perhaps he should retire.