Lamont Peterson boosted his chances of a December clash with Amir Khan with a 12th-round stoppage win over Victor Cayo in Las Vegas.

25576 - Boxing: Amir Khan contemplating Peterson fight

The bout was an IBF light-welterweight title eliminator, taking Peterson nearer the head of the queue to fight Khan, who won the IBF strap from Zab Judah a week ago.

Khan, also the WBA champion, is targeting one more fight at light-welterweight before he moves up a division next year, with the aim of securing a clash against unbeaten American legend Floyd Mayweather Jnr.

After beating Judah, Khan's preference was to fight Timothy Bradley, who was then the WBC and WBO champion - but it now seems that Bradley has been stripped of the WBC crown due to inactivity.

With Bradley also embroiled in a contractual dispute with his former trainer, and seemingly unwilling to take on Khan, the Brit has been expected to meet the winner of the fight between Jorge Barrios and Erik Morales for the vacant WBC title on September 17.

But Khan may find himself under pressure from the IBF to face Peterson - or he may decide that the American represents a more lucrative fight than one against Morales or Barrios, both of whom he would be expected to beat comfortably.

Peterson carries in a 29-1-1 record (15 KOs), with the only defeat of his career coming against Bradley. He picked up a draw against Victor Ortiz, who fights Mayweather in September, despite hitting the canvas.