Riquelme undergoes knee surgery

Boca Juniors midfielder Juan Roman Riquelme has had left knee surgery, which is likely to keep him out of the early part of next season.

Riquelme had surgery in Buenos Aires on Wednesday, after picking up the injury in the penultimate game of the season against Argentinos Juniors.

It has been a difficult year for Riquelme, a former Argentina international who has been overlooked for a place on the national team by Diego Maradona, who took over the team late in 2008.