Wayne Pivac says Wales have used the "pain" of their results in 2020 to inspire them on to being on the brink of a Six Nations Grand Slam.
Wales thrashed Italy 48-7 on Saturday to make it four wins from four in this Six Nations campaign, and they face France next week looking to complete a clean sweep.
It represents a huge turnaround in fortunes for Wales boss Pivac, who struggled in his first year with the team after replacing Warren Gatland.
"It's chalk and cheese," Pivac told reporters when asked to compare Wales' form from last year with their recent upturn.
"We know the pain we went through in the autumn with the results. But we're seeing the players coming through from the autumn now and doing well.
"We’re pleased to be four from four and able to talk about the opportunity of a Grand Slam."
Along with Wales, France have been the standout performers so far in the tournament, and Pivac is anticipating a stern test, albeit one which may be helped by a lack of fans in Paris.
"We'll review the performance and we know we'll be in for a massive game," he added.
"We've been on the receiving end of the result both times against France. No fans neutralises it a bit.
"We've been to Paris in the autumn so that's a good thing. If you asked the side if we'd take four from four and travelling to France for the Grand Slam, I think you'd know the answer."
Wales' victory was their 16th successive win against Italy, which marks their longest such run against any opponent in Test rugby.
Pivac's side had a bonus point wrapped up by half-time, though captain Alun Wyn Jones saw room for improvement.
"We were pretty clinical, particularly in the first half. We're a tad frustrated with the second half but it's a case of job done and plenty to work on," he told SC4.
"The excitement I feel every time I pull on this red jersey is insurmountable, so I'm looking forward to getting back to it on Monday and preparing for next weekend."