Chile will rely on the results of a late fitness test to decide whether star striker Humberto Suazo can start in their World Cup opener against Honduras on Wednesday.
Suazo, who top scored in South American qualifying with ten goals in 18 games, is recovering from a hamstring injury sustained in a 3-0 friendly win over Israel on May 30.
While Suazo has returned to training, coach Marcelo Bielsa still has reservations about using a player who has also suffered from a shoulder injury in recent months.
"We still have one training session which will take place in a short while," Bielsa said on Tuesday. "I haven't yet decided on my starting line-up.
"Suazo has been coming along over the last few days and he's been training in the same way as his team-mates. Nevertheless, physically, he's still feeling the effect of the rest he's had to take ever since the Sunday on which he injured himself.
"He has been able to train over the past three days and he has been able to train fully, 100%. Now, if you're asking me is he back in the same shape as he was before his injury, then he's not in the same shape. But if you're asking me if he's healthy, yes he is healthy in the sense that he can take on the same tasks as the other players."