[icWales] Stephen Jones has admitted that Wales coach Steve Hansen is very good at keeping his team selection under wraps.
Llanelli outside-half Jones has battled back to fitness after missing Wales' opening two games of the RBS Six Nations Championships with a broken thumb and is now in a three-way fight with Ceri Sweeney and Iestyn Harris for the No 10 shirt against Scotland.
But Jones said Hansen has given nothing away as he prepares for the game at Murrayfield on Saturday.
"I don't know if I'm playing yet," he said. "Steve is very good like that and plays his cards very close to his chest. He gives us no indication at all."
Jones, whose last Test appearance came against New Zealand in November, was injured playing against Cardiff on February 4.
Jones said, "It's been very frustrating, but it's the nature of the game I'm afraid. You do pick up injuries but it just so happened that it was in the last game before the Six Nations started.
"I managed to train last week and this week has been fine. Ceri played very well against England. He had a great full debut and controlled the game well against the No 1 team in the world.
"Italy was a bad loss, but I found the England game harder to take as I was in the stadium. The atmosphere was brilliant, the boys played so well and I just wanted to be a part of it.
"I felt a bit isolated when I was not involved in such a good performance."
Jones now believes it is imperative for Wales to register a victory in the Six Nations this weekend but insists Scotland, who have also yet to win following losses to France and Ireland, will be no pushovers.
He said, "It's a must-win game for both teams. It's as simple as that because if we want to climb the world ladder this is a game we must look to win.
"I've played against their provinces for Llanelli - we beat Glasgow but came unstuck against Edinburgh - and we realise it's going to be a hard challenge."
Jones says that Wales can take a leaf out of the French book this weekend after they mauled the Scots 38-3 at the Stade de France 10 days ago.
Jones said, "The French managed to pressurise them from the set-piece and, from a backs' point of view, they didn't get a chance to play.
"If our forwards can disrupt their set-piece it will make it easier for our backs. They have recalled Scott Murray, who is very good at disrupting the opponents' line-out and we must be sharp and quick-witted to secure our possession."