Hadden watched his side outmuscled and outclassed as last year’s Grand Slam champions ran riot at Murrayfield.

The 26-13 scoreline failed to tell the story of a game Wales dominated, touching down through Tom Shanklin, Alun-Wyn Jones, Leigh Halfpenny and Shane Williams.

Scotland’s only try was a late consolation from substitute Max Evans.

Asked why they were so comprehensively outmanoeuvred up front, Hadden said: “That’s one of the things that we’re going to have to look at very closely during the course of the week.

“There could be a number of reasons for that. It could be technical problems. But, for me, it just seemed as if we were too passive.

“I haven’t seen us look so passive or tentative. The last time I saw that was South Africa 2006.

“Maybe they’re thinking too hard about the shape instead of just getting wired in.

“It’s early days in this competition. You can never be sure how you’re going to start. One thing I do know is that we’ll definitely get better.”

He added: “We knew we were playing the best side in the northern hemisphere today but we’re bitterly disappointed that we allowed them to show it so easily.

“I felt we were outmuscled, especially in the first half an hour.

“But you have to give them credit for taking advantage of the extra man when Geoff Cross was sinbinned.

“But for me, the killer blow was just after half-time. We were always chasing after that.

“It was inevitable we were going to come strong at some stage and, sadly, like too often before, it was too late before we got going.”

Debutant prop Cross was sin-binned after being knocked unconscious making a dangerous tackle on Wales full-back Lee Byrne.

Wing Simon Webster was also knocked out and both face cognitive tests this week to assess if they will be fit to face France on Saturday.

Scotland also have injury concerns over captain Mike Blair, Jim Hamilton, Phil Godman, Jason White, Chris Cusiter, Scott Gray and Graeme Morrison.