By Hassan Kiawu
BBC Sport, USA
Liberia's Zizi Roberts has undergone a knee operation
Liberian international Zizi Roberts has successfully undergone knee surgery in Colorado, America.
The surgery to his right knee will keep him out of action for the remaining two months of the Major League Soccer season, where he plays for the Colorado Rapids.
Roberts told BBC Sport that he was happy that the procedure had gone well.
"I have been experiencing pain in my knee for a long time but until now I have opted for a conservative course of treatment, including wearing a brace and resting," he said.
So far this season Roberts has made just five appearances for his club and scored a single goal.
The striker's operation comes as a blow to Liberia as they prepare to host Togo on Sunday in a 2006 World Cup qualifier.
The Liberia Football Association have been trying to get Roberts to return to the Lone Star squad but the knee injury has prevented him from joining the squad.
The striker however refused to rule out a return to the national side.
"I hope they can win with flying colours but right now, my priority is to become healthy".
His last appearance for Liberia was last year when he helped the Lone Star qualify for the group stages of the 2006 World Cup qualifiers when they beat the Gambia 3-0 at home.