Winger Thom Evans also returns having fully recovered from the concussion he suffered during the final game of Scotland's campaign, against England at Twickenham.
Glad to have all three internationalists back in his starting XV as the Warriors seek to return to winning ways, Warriors head coach Sean Lineen said: "Its great to have these three quality players back in the team. It strengthens the squad and we're all desperate to get this show back on the road.
"This is a season where the highs have been very high and the lows have been very low. Last week was very hard to take and the whole squad is champing at the bit to play this weekend."
Having already played at fullback, centre and stand-off this season, Ruaridh Jackson will get another crack in the playmaker role as Dan Parks is relegated to the bench.
Prop Kevin Tkachuk will edge ever closer to his 100th game for Glasgow as he starts ahead of Justin Va'a, who is ruled out due to a head knock during the home defeat to Munster last weekend, to make his 98th appearance for the club.
Fullback Bernardo Stortoni will miss his first ever game since signing at the beginning of last season after retiring 30 minutes into last weekends game due to concussion.
Stortoni, who has made a return to international rugby with Argentina since becoming a Warrior, has played 43 consecutive games since signing in summer 2007. Colin Gregor pulls on the number 15 jersey as a result.
After such a consistent service for The Biggest Team in Glasgow, Lineen added: "It just shows you how resilient he is. He's still desperate to play and I wish there were more players like him around today."
Glasgow Warriors team to play Scarlets in the Magners League at Parc Y Scarlets on Saturday 4 April (kick-off 5:30pm)
15 Colin Gregor
14 Lome Fa'atau
13 Max Evans
12 Graeme Morrison
11 Thom Evans
10 Ruaridh Jackson
9 Mark McMillan
1 Kevin Tkachuk
2 Dougie Hall
3 Moray Low
4 Tim Barker
5 Alastair Kellock CAPTAIN
6 James Eddie
7 John Barclay
8 Kelly Brown
Substitutes
16 Fergus Thomson
17 Ed Kalman
18 Dan Turner
19 Calum Forrester
20 Dan Parks
21 Colin Shaw
22 Peter Horne (West of Scotland)*
* = Member of Scottish Rugby's Contracted National Academy
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