Johnny Lewis: Best days behind Manny Pacquiao

Legendary Australian boxing trainer Johnny Lewis insists Manny Pacquiao's best days are behind him ahead of the Filipino legend's WBO world welterweight championship title fight against Jeff Horn.

Lewis, the man best known for training world champions Kostya Tszyu and Jeff Fenech, believes Pacquiao has deteriorated since his defeat to Manual Marquez in 2012, and feels the fight with Horn could throw up a surprise result.

"When he got knocked out by Marquez, he was gone for a while. Not too many come back from knockouts like that," Lewis told Fox. "This fight is just what boxing in Australia needs because we haven't had something of this magnitude for many years.

"Jeff Horn is a breath of fresh air. A tough kid with a good punch and a great attitude who is more natural at the weight than his opponent."

Lewis insists Pacquiao's most recent fights indicated "his best days are far behind him" and that early pressure from Horn could put the Filipino in trouble.

"When you are gone in boxing, you are totally gone. Some other sports like football you see blokes lose a yard in pace but they can still do some handy things. In boxing when their legs go that's it.

"In recent fights he's started to look a bit battle-worn but he will still test Jeff Horn early. If Jeff can get over those early bombs then Manny might just find his legs getting a bit more tired than ever before."

The fight will take place at Brisbane's Suncorp Stadium on July 2nd.