Scrum-half Jack Oliver makes his first start amid nine Glasgow Warriors changes for their URC game with Lions in Johannesburg on Saturday.As Franco Smith's side return to league action after their Champions Cup quarter-final exit to Toulon, Seb Stephen, Rory Sutherland and Fin Richardson comprise a new-look front-row.Euan Ferrie and Sione Vailanu come into the back-row while Stafford McDowall shifts to inside centre - and takes the captain's armband from the rested Kyle Steyn - as Huw Jones returns at outside centre.Fergus Watson, who made his debut against Benetton last month, and Kyle Rowe are drafted into the back three to join Josh McKay.Ryan Burke could make his pro debut off the bench, with Sione Tuipulotu, Zander Fagerson and fit-again Nathan McBeth also among the replacements.Glasgow are top of the table - four points clear of Stormers with four games of the regular season remaining - while Lions occupy fifth spot."The Lions pose one of the toughest away tests in the URC, defending a strong home record as they chase a place in the play-offs," said Glasgow head coach Smith."Their brand of rugby can cause problems for any team, with a blend of physical forwards and backs that can run the ball from anywhere on the field."It is a test that we have prepared for in training this week and one that we know we must be at our best to meet."Glasgow XV to face Lions: McKay, Rowe, Jones, McDowall, Watson, Lancaster, Oliver; Sutherland, Sebastian, Richardson, Oguntibeju, Samuel, Ferrie, Vailanu, Demspey.Replacements: Hiddleston, McBeth, Z Fagerson, Cockburn, Burke, Fraser, Afshar, Tuipulotu.