Weir set for return
Scotland stand-off Duncan Weir will bring his six-month injury lay-off to an end when he reclaims his place in the Glasgow side for Saturday's clash with Scarlets.
Weir broke his leg against Ospreys last April but will start for the Warriors side as they look to maintain their 100 per cent start to the RaboDirect Pro12 season.
The Dark Blues back has already come through two matches with club side Stirling County to prove his fitness to Glasgow head coach Gregor Townsend.
The Scotstoun boss said: " I'm delighted that Duncan Weir is able to rejoin the squad after several months out of action. He has worked hard throughout his rehab and looked sharp in training, as well as during his recent games with Stirling County."
As well as 22-year-old Weir, Townsend makes nine other changes to the team which beat Zebre in Parma last Friday.
Niko Matawalu starts on the right wing in place of Tommy Seymour and Sean Lamont replaces Byron McGuigan on the opposite flank. Mark Bennett comes in at outside centre to partner Alex Dunbar, with Gabriel Ascarate dropping to the bench.
Weir forms a new half-back partnership with scrum-half Chris Cusiter, while in t he front row Ryan Grant comes in for Gordon Reid, Pat MacArthur replaces Dougie Hall at hooker and Moray Low starts ahead of Jon Welsh.
Captain Al Kellock will combine with Tim Swinson in the engine room, with Rob Harley moving from second-row back to blindside flanker.
Chris Fusaro starts at openside and Richie Vernon replaces the injured Josh Strauss at number eight.
Scarlets have won their last five matches against Scottish sides, but the Warriors' only loss in their last eight encounters against Welsh opposition was to the Llanelli side in the equivalent fixture last season.
Now Kellock expects the league leaders to face another tough examination, saying: "It will be incredibly tough. Scarlets last year were very good and in the games we played against them were ahead of us by a margin.
"Everybody else we competed well with, but that last game when we went down there at the end of the season stands out as a sore point.
"The fact that it was such a big disappointment - it probably cost us a home semi-final - it has certainly got an added motivation for me and the players.
"So we have a couple of points to prove. We have also got John Barclay playing for the opposition this year, so there are a lot of boys looking forward to playing against him.
"But we have got to use the momentum we have built up in the first four games. We have got to be better than we were certainly for the last 20 minutes against Zebre."