Glasgow name Russell at 10 for Ulster
Centre Peter Horne will make his first start in almost a year in one of two personnel changes from the team which beat Munster 22-5 in Limerick last weekend.
Mark Bennett replaces Alex Dunbar to partner Horne in the centres, with Russell moving to number 10.
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Hide AdUlster are currently in second place in the RaboDirect PRO12, and Glasgow can go level on points with the Belfast side with a bonus-point win.
Townsend said: “Last week was a precious win for the club but we have another huge game in prospect at Scotstoun tomorrow night.
“Ulster are coming to Glasgow high on confidence and ahead of us in the league – so it’s a very important game for both clubs.”
Ulster make three changes from the team which beat Connacht 58-12 last week in Belfast, with Darren Cave, Tom Court and Sean Doyle all coming into the side.
Glasgow: Murchie, Maitland, Bennett, Horne, Seymour, Russell, Cusiter (capt); Reid, Hall, Welsh, Swinson, Gray, Strauss, Fusaro, Wilson. Subs: Macarthur, Grant, Cross, Nakarawa, Harley, Matawalu, Jackson, Vernon.
Ulster: Andrew, Bowe, Cave, L Marshall, Trimble, Jackson, P Marshall; Court, Herring, Lutton, Muller (capt), Henderson, Henry, Doyle, Williams. Subs: Annett, Warwick, Fitzpatrick, Stevenson, McComish, Heaney, McKinney, Gilroy.