England forward Theo Walcott has been ruled out of Tuesday's World Cup qualifier against Poland with a chest injury.
The Arsenal player was taken to hospital after a bruising challenge from San Marino's goalkeeper Aldo Simoncini in the opening minutes of a 5-0 win on Friday and scans confirmed he must return to his club for further treatment.
The Football Association are yet to reveal the full extent of the injury, but England manager Roy Hodgson suggested after the game that Walcott had suffered a worrying problem.
"I don't think it is going to be good," he said.
"He is in hospital overnight. We can only hope it is bad bruising but he was pretty badly beaten up."
Aaron Lennon came on for Walcott at Wembley and Hodgson is unlikely to call-up a replacement wide-man as Adam Johnson is also in the squad.
England's medical staff will assess midfielder Frank Lampard's knee injury on Sunday and check on full-back Ryan Bertrand, who missed the San Marino match with a virus.