AMIR KHAN believes his shocking defeat by Breidis Prescott last September actually boosted his world title chances by turning him “from a boy into a man”.

Promoter Frank Warren will go “back to the drawing board” to plan Amir Khan’s route to a world title after the youngster’s impressive victory over Marco Antonio Barrera on Saturday night.

Amir Khan took a huge step towards a world title shot with an excellent fifth-round technical decision win over bloodied legend Marco Antonio Barrera.