Teenage duo Lennon Miller and James Wilson have earned their first call ups to the senior Scotland squad.
The pair are part of seven-man William Hill Premiership contingent in Steve Clarke's squad.
Wilson, 18, is included alongside Hearts team-mate Craig Gordon, 42.
Rangers duo Liam Kelly and John Souttar are in along with Celtic's Anthony Ralston, Motherwell's Miller and Kevin Nisbet of Aberdeen.
Scotland face Greece in their UEFA Nations League Play-Off with the first leg taking place on Thursday, March 20 before the return game at Hampden on Sunday, March 23.