Trinidad and Tobago was to learn Sunday whether goalkeeper Andre Marchan will be able to play against Panama in CONCACAF Olympic qualifying.
Marchan, 21, sustained a mild concussion in the 77th minute of Friday night's 7-1 loss to Mexico. He played the rest of the match but left the field immediately after it ended.
"We can assess him further in the morning," manager Angus Eve said before Saturday's training began. "Hopefully, he can be all right but we're not sure."
If Marchan cannot play, Eve said, second-choice goalkeeper Sheldon Clarke would start.
Marchan suffered the concussion after colliding with Mexico's Nestor Calderon, who kicked Marchan in the left side of the head with an extended right leg to get a long ball.
"Initially, he did have a mild concussion for about 10-15 seconds, at which point he was not aware of where he was," Trinidad team doctor Israel Dowlat said. "He had no blurred vision or double vision.
"After about 15 seconds, he was able to tell where he was, what he was doing. He was able to make out fingers. He was a lot better. He had some mild swelling where he got the blow to the head."
Dowlat added that Marchan's pain decreased overnight.
"The pain had substantially reduced in terms of the pain scale," Dowlat said. "(Friday night) would have been 8 of 10. (Saturday) morning, it was about 3 to 4 on 10. We've kept him on anti-inflammatories throughout the entire period."
During training, both goalkeepers executed drills involving footwork, quickness and catching balls in the midsection. But Marchon performed no drills requiring him to dive or to move laterally. He participated for the first 30 minutes of a training session that lasted an hour and 20 minutes.
"He was a lot better today," Dowlat said after training. "Today was just really to get his confidence back, to see how he was moving. He looked pretty alert so all indications are good."
Trinidad and Tobago sustained another injury when the Seattle Sounders' Cordell Cato had to be carried to the bench in the middle of training. Cato aggravated a ligament injury in his left ankle, Dowlat said.