Gabon international Guy Tchingoma collapsed and died on the field during a premier league match in Libreville on Saturday.
The midfielder, 21, collapsed after contact with an opposing player late in the match between his club FC105 Libreville and US Mbiliandzami.
The Gabonews agency reported that there were no medical attendants on hand at the game.
Tchingoma was taken to hospital in the team bus but pronounced dead on arrival.
No cause of death was given.
Tchingoma made his debut in an Africa Cup of Nations Cup qualifier against Ivory Coast in Libreville last September.