Aston Villa conceded a last-minute equaliser to let slip an early advantage in their Intertoto Cup third-round tie with Odense.
Martin O'Neill's men had looked like claiming a hard-fought win after Martin Laursen headed them ahead with 14 minutes remaining on a rainswept night.
Yet Villa's relief was shortlived as their impressive hosts refused to lie down and earned just reward for an enterprising display through Anders Moller Christensen.
It was Odense's second equaliser of the game after new signing Steve Sidwell had put through his own net on his competitive debut to cancel out John Carew's early effort.
The opener came after just six minutes as Villa started well and threatened to overrun the Danish side.
Craig Gardner stretched the defence as he crossed into the box and Young fired in a fierce first-time shot.
Goalkeeper Arek Onyszko saved but could do little as Carew pounced on the rebound to fire ruthlessly into the net.
Villa continued to create most of the early running with Gabriel Agbonlahor and Sidwell prominent.
Yet the Danes spurned a good chance to level after 18 minutes when Henrik Hansen picked Djiby Fall out with a superb cross and the striker could only head tamely at Stuart Taylor.
Suddenly Odense came to life and Villa were fortunate not to be trailing at half-time as the hosts took control.
Their equaliser had a touch of fortune about it, however, as Atle Roar Haland's cross was missed by Hansen and Sidwell diverted the ball into his own net.
It could have been worse for Villa moments later as Bjorn Runstrom headed narrowly wide.
Odense then threatened to rub salt in the wounds as they introduced a fired-up former Villa player in Eric Djemba-Djemba as a substitute for the injured Esben Hansen after 26 minutes.
Villa started to lose some composure as Carew and Young were both booked for late tackles.
With Henrik Hansen then sending a dipping shot from the edge of the box just over, Villa were relieved when the interval came.
Villa's problems continued early in the second half with Taylor spilling a corner and then saving from Johan Absalonsen and Fall.
Gardner then needed to head off the line from Hans Henrik Andreasen after Taylor flapped at another corner.
Villa offered little aside from a long-range Wilfred Bouma shot which was pushed aside by Onyszko.
Odense continued to attack Villa, particularly down the left, where Gardner was often left exposed.
Yet the visitors rode the storm and Sidwell went close to putting his side ahead when he latched onto a Young cross but flicked the ball wide.
Young had greater success a minute later as he floated in a free-kick and Laursen leapt bravely to power in his header from close range.
Laursen went close to another moments later when Onyszko saved and Villa were caught out after 89 minutes as they failed to deal with a long ball and Fall teed up Christensen.