Scotland flanker John Barclay will captain a Glasgow team showing four changes for the Magners League clash with Connacht at Firhill on Friday night.
The 23-year-old has recovered from an Achilles injury, which kept him out of the Warriors' opening two matches. Barclay is joined in the back row by Robert Harley, who will make his first start of the season after impressing as a substitute. Head coach Sean Lineen said Harley was deserving of his selection.
"Robert is being rewarded for all his hard work," said Lineen. "He's got a fantastic attitude and has made a big impact every time he's come on."
Colin Gregor comes in at scrum-half and Hefin O'Hare starts on the wing in the two other changes from last weekend's 23-11 loss to Newport Gwent Dragons.
The Warriors have not lost at home to an Irish province since Ulster triumphed in April 2009, but Connacht have impressed this season and went close to winning at Scarlets last weekend.
Lineen added: "Friday night will be a huge physical test.
"Connacht are coming into the game with some momentum, so we know we're going to have to really front up."