By Mark Vester

The retired Joe Calzaghe, who hung up the gloves in early 2009, has once again called for Ricky Hatton to walk away from boxing for good. Hatton has been inactive since Manny Pacquiao knocked him out in two rounds last April. He announced a comeback fight for the summer. Calzaghe wants him to walk away for good.

"I think Ricky Hatton should quit. No fighter wants to retire on the back of a bad loss but it was a devastating defeat. Ricky got beat up pretty bad by Mayweather Jr so I don't think he should fight again," Calzaghe said to GQ Magazine.

Calzaghe likes the chances of WBA champion David Haye making his mark in the heavyweight division. He predicts Haye will knockout mandatory John Ruiz on April 3 and gives the British champion a good shot at knocking out Wladimir Klitschko if the two ever meet in the ring.

"David Haye fought the fight he had to fight with Valuev - he's a big lump. To go to Germany and pull that off is a brilliant win for him. I think Haye will knock out John Ruiz when he boxes him and that will set him up for a big fight against one of the Klitschko brothers. They're more mobile, and they can punch, but Haye can punch too. Wladimir Klitschko's been down a few times, so has Haye. I think it'll be a really exciting fight and Haye can win if he catches him on the chin and knocks him out. I like all the trash-talking. I used to do a bit of it myself," Calzaghe said.

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