Glasgow Warriors fly-half Duncan Weir has been handed the opportunity to stake his claim for Scotland selection after being picked ahead of Ruaridh Jackson for Monday's RaboDirect PRO12 derby with Edinburgh.
Weir is recalled ahead of Jackson - Scotland's first-choice number 10 at the Rugby World Cup - as one of four changes to the Warriors' side for the Boxing Day match at Murrayfield.
Graeme Morrison is back at inside centre, David Lemi on the wing and Rob Harley at blindside flanker as Glasgow seek to extend their seven-match unbeaten run and dent Edinburgh's formidable home run of six wins from seven.
Troy Nathan is to move from inside to outside centre to accommodate Morrison, Harley's inclusion following a hand injury sees John Barclay return to openside flanker and Lemi, who is ineligible for the Heineken Cup, replaces Federico Aramburu.
Number eight Johnnie Beattie is selected ahead of Ryan Wilson, while 19-year-old Stuart Hogg retains the full-back berth, with Rory Lamont again selected on the wing.
Glasgow head coach Sean Lineen told www.glasgowwarriors.org: "It's a measure of the competition we've got at the moment that each week a number of guys can feel justifiably aggrieved, but as a coaching team we've shown that players will get their opportunity if they keep working hard, and that's very much the case here again.
"As regards the stand-off position, it's great to have two guys who are each presenting a very strong case for selection.
"I'm pleased to have Rob Harley fit again this week, because he's been terrific all season."
Edinburgh, who travel to Glasgow on New Year's Day, have been free-scoring of late and Lineen has called for Glasgow to be more ruthless when the try-line is in sight.
He added: "Edinburgh have set the bar high in that regard, scoring lots of tries, so it's up to us to show both that we can cope with their threat and bring out more of ours."