There were fears he might have gotten some damages to his ribs and that made him spend the night at the medical centre. Scan results are still uncovered at the moment but the 23-year old winger had already been excluded from the England squad to face Poland on Tuesday.
According to the English Football Association in a press release, it was a chest injury.
"Theo Walcott has been ruled out of the FIFA World Cup qualifier with Poland on Tuesday with a chest injury,"
"The Arsenal forward was taken to hospital following a collision with the San Marino goalkeeper on Friday night, he was monitored overnight as a precaution and following scan results today will return to his club for further treatment."
