DP World Tour: Danish Golf Championship :
There were eight players who had at least a share of the lead during a chaotic Sunday at Great Northern, but it was the 38-year-old who came out on top to claim his second DP World Tour crown.
Winther started four shots adrift at the start of his final round, but boosted his chances with birdies at the fourth and fifth before dropping shots at the sixth and eighth to derail his title bid.
A brace of birdies from the ninth saw him surge back into contention before rejoining the lead at -13 with a gain at the 13th. He briefly led on his own before Rasmus Højgaard's late burst saw him sit alongside his fellow Dane at the summit.
But Winther's eagle putt from 31 feet at the 16th was enough to seal a three-shot victory at -15 in Kerteminde.
When asked if he ever thought his name would be etched on to the trophy when he was a greenkeeper 15 years ago, Winther said: "No! I was never going to be a golfer so this is just insane. I don't know what to say, I'm in shock!
"It's just a joke really, I'm sad we're not coming back here next year.
"It's impossible to rank, just after my kids' birth I think. It's amazing and I don't think it's sunk in yet, but I'm overly happy."
He added: "I feel a lot of love from the crowds and all the Danes support all the Danes, besides all the other players, but especially the Danes you can feel the love shining through.
"The crowds carried me all week, it's been unbelievable."
Overnight leader Romain Langasque got off to a poor start, bogeying each of the first three holes to surrender his advantage to Yanhan Zhou.
Zhou birdied the first and soon had a two-shot lead at -14 following Langasque early collapse, which the Chinese star maintained despite a bogey at the third.
Caleb Surratt and Matthew Jordan both birdied the fifth and when Winther made it successive gains at the same hole, there was a four-way tie for the lead at -12 .
Antoine Rozner bounced back from bogeys at the second and third with birdies at the fourth and fifth to increase the leadership group to five.
The home crowd were in raptures when Winther, who had also bogeyed the eighth, carded his third birdie in five holes at the 13th to join Zhou at the top.
A bogey at the 14th from Zhou gifted Winther the outright lead, but another Dane was on the charge.
Rasmus Højgaard, who began the day five shots adrift, had mixed three birdies and three bogeys on his first 12 holes before a brilliant burst to finish his round.
He birdied the 15th and 16th before chipping in for eagle at the penultimate hole to sit alongside his compatriot at -13
But just two minutes later, Winther responded with an eagle of his own from 31 feet at the 16th to jump up to -15 under.
Højgaard bogeyed the last to finish on -12, but Winther's advantage with only the difficult par-three 18th to play was two after Jordan birdied the 17th.
Winther safely found the green and two-putted for par, which put him on the cusp of victory.
Zhou needed to ace the last to force a play-off, but came short with his effort as Winther became the second Danish winner of this event.
Celli, Højgaard and Oliver Lindell, who signed for a 68, along with Zhou and Jordan after they bogeyed the last finished in a share of second -12.
Denmark's Marcus Helligkilde and Langasque were one shot back at -11, while another Dane, Jacob Skov Olesen, finished in a T9 alongside Freddy Schott, Joel Girrbach and Ewen Ferguson -10
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