The are joined by Stage 3 Academy scrum-half Kaleem Barreto for the visit of Watsonians to Fullarton Park.
Hawks travel to take on Melrose with Matt Smith, Grant Stewart, Kiran McDonald, George Horne, Sam Yawayawa and Robert Beattie starting for the Glasgow outfit.
Ayr include Robbie Smith, Stafford McDowall and George Stokes in their starting XV for the trip to Malleny Park to take on Currie. Glasgow stand-off Brandon Thomson could make his Ayr debut from the bench.
Stirling County host Boroughmuir with Chris Fusaro, Lewis Wynne, Hamilton Burr and Adam Nicol starting for the Bridgehaugh men.