Peter Wright reckons Scotland can pull off a major shock by beating world champions New Zealand on Saturday.
The Scots impressed as they saw off Argentina 41-31, with the Kiwis up next at Murrayfield.
"The All Blacks will be worried, they will look at that performance Scotland put in against Argentina and will be worried," said former prop Wright.
"I'm being pretty optimistic here but Scotland will be confident they can maybe spring a surprise."
Saturday's Test win over the Pumas at Murrayfield was head coach Vern Cotter's first home match in charge.
And BBC pundit Wright believes the signs are positive that Scotland are on the right track, with the World Cup up ahead in England next year.
"It's always good to win and we don't get that experience too often, certainly in the last few years with Scotland," said Wright, who played for his country 21 times.
"That's them now won four out of their last five, which is pretty decent.
"The performance as well, they entertained and scored five tries. I can't remember the last time Scotland scored five tries in an international.
"They played some good rugby for 60 minutes, the players really shone. Ross Ford and Greg Laidlaw probably played their best ever games for Scotland, and I thought the crowd were fully entertained.
"It was a bit of a shoddy ending with a couple of tries conceded, but overall it's a real plus point that we're on the right foot. Hopefully we can take it on on Saturday.
"The players have always been there, in the last two or three years we've said we have some good players and the form of Glasgow is bringing a lot of those guys in with confidence.
"What Vern Cotter has done is speak to some of the famous guys from Scottish rugby in [Ian] McGeechan, [Jim] Telfer and Andy Irvine, and he's asked what philosophy in the past has been good for Scotland and he's installed that.
"He's given the players the opportunity to play. They just looked relaxed, body language-wise, and they've not looked like that in the last couple of seasons."