Mexican boxer Juan Manuel Marquez has knocked out Fillipino Manny Pacquiao in the sixth round of their non-title welterweight rematch in Las Vegas.
Pacquiao was shading Marquez on points before the 33-year-old was sent crashing to the canvas by the 39-year-old Marquez.
It's the pair's fourth and probably last clash - the two have been at each other for the last eight years, with Pacquiao winning the last two after the first ended in a draw.
