Scotland midfielder Scott Brown is optimistic he will be fit to face Wales on Friday - and has not ruled out playing against Belgium too.
Brown missed Celtic's win over Hearts on Sunday to rest his ongoing hip problem after helping Neil Lennon's side beat Spartak Moscow on an artificial pitch in Russia.
Speaking at the Scotland base today, Brown said: "I'm not too bad, I'm getting there slowly.
"I'm going to try for Friday first of all and see how I am. I'll take everything one step at a time and Wales is the most important game now.
"I missed out on the Hearts game at the weekend but I'm feeling not too bad just now. I'll see how training goes in the next few days."
When asked if he could play both of the World Cup qualifiers, Brown said: "I don't see why not. I feel okay.”
Lennon has already given Brown and Scotland manager Craig Levein his blessing for Brown to play both matches if possible.
"He says it is up to me, if I feel fine to play one game, play one, and if I feel okay for two, just go ahead and do it, whatever my body can handle just now," the former Hibernian player said.
Meanwhile Blackburn defender Grant Hanley has pulled out of the squad with a groin injury and Norwich winger Robert Snodgrass is doubtful after being hit by an ankle problem.
Scotland assistant manager Peter Houston confirmed Hanley's withdrawal after the first training session at their Mar Hall base ahead of Friday's game in Cardiff.
Houston said: "Grant Hanley has a groin strain and he is going to miss out."