Scotland fly-half Finn Russell has recovered sufficiently to start against South Africa in the second round of Nations Championship matches.

The 33-year-old steps in for Tom Jordan at Loftus Versfeld Stadium in Pretoria on Saturday after sitting out last weekend's 47-38 victory in Argentina because of a calf strain.

Two additional alterations see tighthead prop Zander Fagerson and lock Gregor Brown elevated into the starting XV following their bench roles in Cordoba, replacing the injured Elliot Millar Mills and Jonny Gray.

Will Hurd, Josh Bayliss, Magnus Bradbury and Stafford McDowall join the replacements, while winger Darcy Graham drops out ahead of Scotland's first trip to South Africa since 2014.

The bench also features hooker Gregor Hiddleston, who scored a try on debut against Argentina, along with prop Rory Sutherland who is poised for his 50th cap.

South Africa began their campaign with a decisive 45-21 win over England in Johannesburg.

The world champions have introduced 10 changes, resting Siya Kolisi, Eben Etzebeth, Cheslin Kolbe and Sacha Feinberg-Mngomezulu.

Scotland have yet to secure a victory on South African soil, and head coach Gregor Townsend described the altitude test as the ultimate challenge.

He added: "We see it as an opportunity to see where we are, to test ourselves against the best."

Russell will earn his 95th Scotland cap, with Townsend noting that his fly-half has trained fully since the middle of last week.

"We want to get learnings from this game with our best available team," he said.

"We know the bench will have a big part to play. It was pleasing to see Tom (Jordan) get 60 minutes last week. It's good that we have players that can really add to our game in the second half because we will need it."

Scotland: Rowe, Steyn, Hutchinson, Tuipulotu (capt), Dobie, Russell, White; Schoeman, Ashman, Z Fagerson, Brown, Cummings, M Fagerson, Darge, Dempsey.

Replacements: Hiddleston, Sutherland, Hurd, Samuel, Bayliss, Bradbury, Jordan, McDowall.