The 20-year-old will start at stand-off for the first time in his professional career this weekend as Sean Lineen's men take on Bath in the European Cup.

Jackson, who captained Scotland Under-20 last season, admits he has learnt a lot in training from the man he is replacing.

He said: "Dan Parks' kicking is pretty special and I'm really enjoying being able to work alongside him and learn from him every day.

"He's a pretty mentally strong guy; he never really lets things get to him too much. Another thing is his organisational skills. He's a great communicator on the pitch and that’s something I've paid particular attention to. I'm really looking forward to my first big chance at 10."

Lineen is confident the young stand-off can rise to the occasion at The Rec.

Lineen added: "Ruaridh's been involved in just about all our games so far this season and I've been very impressed with his attitude.

"I've always rated him very highly. He has a great temperament and wants to be the best he can be."

Colin Gregor replaces Mark McMillan - who like Parks is ruled out with a knee injury - while Argentina's all-time record points scorer, Jose Maria Nunez Piossek, is named on the bench for the first time.