IBF super-bantamweight champ Manny Pacquiao recorded a devastating first-round win over Thai challenger Fahprakorb Rakkiatgym.

In what was a very one-sided contest while it lasted, Pacquiao landed a wicked right hook to score the first knockdown at the RMC Gym Davao city in the Philippines.

Rakkiatgym rose only to be dropped once again by a massive right uppercut.

The brutal ending saw Pacquiao land a straight left to put his foe on the canvas for the third time and he did not get up for another 20 minutes, let alone manage to beat the 10 count.

It was Pacquiao's third defence of the title he won from African Lehlo Ledwaba last year.

The Philippino can now look towards a possible encounter with American Clarence 'Bones' Adams or IBF bantamweight champ Tim Austin.