Goalkeeper Jack Ruddy has been called up to the Scotland under 21 side to face England and Latvia in the UEFA European Under-21 Championships Qualifiers.
Ruddy, who has featured four times for Oldham Athletic this season, will link up with his teammates following the Portsmouth fixture.
The 19-year-old will miss the games against Crewe Alexandra in the Checkatrade Trophy and the Sky Bet Leauge One clash against Bury on Saturday, October 7.
Good luck, Jack!