Wales missed a great chance to qualify for last summer's World Cup and a 1-0 Nations League defeat to Portugal on Thursday suggests Craig Bellamy's side may still be suffering from a hangover.
Wales head to Denmark, who also missed out on a place in last summer's World Cup, and the home side will be looking to bounce back from their own opening reverse after they fell to a 3-2 defeat in Norway.
However, Brian Riemer's side are unbeaten in their last eight matches on their own patch, so the Dragons have a tough task to get back to winning ways.
Best Bet - Denmark to win & over 2.5 goals @ 20/21
Alternative Bet - Rasmus Hojlund to score at any time @ 10/11
Bet Builder - Lewis Koumas to have a shot on target, Rasmus Kristensen to have a shot & Ethan Ampadu to commit two or more fouls @ 5/1
Best Bet: Denmark to win & over 2.5 goals @ 20/21
Missing out on a World Cup place following a penalty shootout defeat to Bosnia-Herzegovina in the play-offs was a huge blow to Wales and, after gaining promotion in the Nations League, they look to have a tough task at hand as they face Portugal, Norway and Sunday's opponents Denmark.
They have already lost 1-0 to the Portuguese and the Danes should be taken to inflict a second defeat on the principality despite the fact they also started the campaign with a loss when they fell 3-2 to Erling Haaland and company.
Denmark are unbeaten in their last eight home matches and have scored at least twice in nine of their last ten outings, so a high-scoring encounter can be expected in Copenhagen.
The Dragons will do well to escape with anything to show for their efforts.
Alternative Bet: Rasmus Hojlund to score at any time @ 10/11
Despite a difficult time at Manchester United, Rasmus Hojlund remains Denmark's chief goal threat and he should be taken to find the net on Sunday.
He was on target with the second goal in their defeat to Norway and he has already opened his Serie A account for the season with a couple of goals for his club Napoli.
Hojlund scored five goals in the final four group games in World Cup qualifying and has had a total of 18 shots in his last five internationals, so he looks to be back in the groove.
Lewis Koumas to have a shot on target
Rasmus Kristensen to have a shot
Ethan Ampadu to commit two or more fouls
Pays 5/1
Wales forward Lewis Koumas is playing a fringe role at Liverpool, but his strong performance in the EFL Cup win over Tottenham Hotspur should have boosted his confidence.
He had Wales' only effort on target in their defeat to Portugal and he could repeat that on Sunday.
Denmark's Rasmus Kristensen started at right-back against Norway, but he still had two efforts on goal in the 3-2 defeat.
He also had three in a Danish Superliga appearance for Midtjylland against Nordsjaelland and it is worth risking that he will try his luck again when he faces Bellamy's side.
Leeds United midfielder Ethan Ampadu committed two fouls in the defeat in Lisbon and he could be in for an equally busy time in Copenhagen.
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Wales have failed to win any of their last five matches
Craig Bellamy's side have conceded once in five of their last six outings
Both teams have scored in seven of Wales' last ten games
Nine of Denmark's last ten matches have featured at least three goals
The Danes have failed to score at least twice in just one of their last ten matches
The home side are unbeaten in their last eight games on home soil
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This article was written by a partner sports writer via Spotlight Sports Group. All odds displayed on this page were correct at the time of writing and are subject to withdrawal or change at any time.