"Jose Luis Rodriguez was unable to complete training due to the discomfort he felt in his left leg. He had ice on his left thigh, but he could walk. Soon after that he walked without ice. The medical staff will be doing tests tonight," McCollin said.

The 19-year-old player has been capped twice for Panama, playing in the team's latest pre-World Cup friendlies against Norway and Northern Ireland, which Panama lost 1-0 and drew 0-0 respectively.

Panama, who have qualified for their first-ever FIFA World Cup, will play Belgium, England and Tunisia in Group G.

Russia will host the FIFA World Cup from June 14 to July 15 at 12 stadiums in 11 host cities.