Scotland debut for MacDonald Tuesday, November 24, 2009 (18:21:33) Flanker Alan MacDonald will make his international debut for Scotland against Argentina at Murrayfield on Saturday. 24-year-old MacDonald was one of the stars in the Scotland A side against Tonga. The Edinburgh back rower replaces John Barclay in one of three changes made by former England coach Andy Robinson. The other changes are in the backline where Thom Evans and Ben Cairns start at left wing and inside centre respectively. Scotland are on a high following their 9-8 victory over Australia at the weekend, which was their first win against the Wallabies in 27 years. Conversely, Los Pumas are coming off their second successive defeat with a 16-33 loss to Wales on Saturday. Rory Larson retains his place on the replacements bench as co-captain Mike Blair is still battling with an ankle injury that ruled him out of the Wallabies clash. Chris Cusiter, who has shaken off a head knock, will captain the side. Scotland: 15 Rory Lamont, 14 Sean Lamont, 13 Alex Grove, 12 Ben Cairns, 11 Thom Evans, 10 Phil Godman, 9 Chris Cusiter (captain), 8 Johnnie Beattie, 7 Alan MacDonald, 6 Alasdair Strokosch, 5 Alastair Kellock, 4 Nathan Hines, 3 Moray Low, 2 Ross Ford, 1 Allan Jacobsen. Replacements: 16 Dougie Hall, 17 Kyle Traynor, 18 Jason White, 19 Richie Vernon, 20 Rory Lawson, 21 Chris Paterson, 22 Nick De Luca. Content received from: SARugby.com, http://www.sarugby.com/news