Ghana's Emmanuel ''Game Boy'' Tagoe defended his IBO world lightweight title by overcoming Fernando Saucedo with a controversial 10th-round stoppage at Bukom Boxing Arena. 

Referee Roger Barnor stopped the bout after the Argentine boxer hit the canvas from Tagoe's illegal right-hand punch behind his head. 

It was a one-sided affair from the opening bell with Tagoe working Saucedo around the ring with limited response from his opponent. 

Tagoe landed punches at will and cut up Saucedo to send him crashing to the mat in the second round. Saucedo, however, beat the count but he had points deducted following heated exchanges with the referee. 

Tagoe scored his second knockdown in the fifth round with a straight right – Saucedo again beat the referee’s count.

Thereafter, Tagoe got rough with Saucedo by leading with his head and pushing Saucedo into the ropes. Referee Roger Barnor warned Tagoe after Saucedo complained bitterly. 

In the tenth round, Tagoe drilled a straight right hand which hit the back of Saucedo’s head before connecting a left hook that sent the Argentine crashing to the mat for the third time.

Saucedo rose up to protest but to his surprise referee Roger Barnor waved off the fight to hand Tagoe victory. 

Tagoe retained the belt and remains undefeated in 28 bouts.