With one eye on Floyd Mayweather, Manny Pacquiao takes on Jeff Horn

Filipino boxing legend Manny Pacquiao

Filipino legend Manny Pacquiao faces unheralded Australian challenger Jeff Horn in Sunday's world welterweight title fight in Brisbane in pursuit of a dream rematch with Floyd Mayweather.

The Pacquiao camp says it is anticipating a "short and sweet" win over unbeaten Horn, an ex-school teacher. The eight-weight world champion, 38, is a favourite to improve his record of 59 wins, six losses and two draws vs Horn (16-0-1). The Pacquiao camp is setting up another showdown with Mayweather, who beat Pac-Man' in the Fight of the Century two years ago. "We're chasing a rematch with Floyd and know Manny has to score a big knockout win over Jeff Horn if that's going to happen," Pacquiao's trainer Freddie Roach said.