Wiesentraum stunned punters with a shock 40-1 success in the 'In Loving Memory of Scott Dobson' Beginners' Chase at Doncaster.
Victory looked out of the question for most of the race as Lucy Wadham's six-year-old was struggling at the rear of the field on his debut over fences.
However, he picked up noticeably for Dominic Elsworth in the long straight and collared Vintage Star close home to prevail by a neck.
Wadham's husband and assistant Justin said: "He's a good ground horse, which is why we came here, and I think he wants further. His jumping got better as the race went on and he will improve for better ground.
"This was surprising, so we'll stick to novice chasing, but it depends on the ground. He's a good-actioned horse."
Connections have Cheltenham Festival aspirations after Rocky Creek opened his account over fences in the Healthwatch Doncaster Novices' Chase. Runner-up to Harry Topper at his first try at the bigger obstacles, the Paul Nicholls-trained gelding beat a small but select field in good style.
Daryl Jacob always had the 4-6 shot up with the pace and though Molotov tried to make a race of it, Rocky Creek was too strong and strode away to win by four lengths, with Attaglance 15 lengths away in third.
"The form of the Exeter race has worked out well with the winner winning a Grade Two chase at Newbury," said Nicholls' pupil assistant Tom Jonason.
"It's not been straightforward between Exeter and here, but hopefully he will turn into a Festival horse in March. Between now and then he's got time to have two more runs. There were a couple of good benchmarks in there."
Stan James cut Rocky Creek to 14-1 from 20-1 for the RSA Chase at Cheltenham.
31 August 2015Turner calls time on riding career
Pendleton so close to dream success
Whitman lifts Trophy for Johnston
Haydock option for 'Frankel' winner
Hobbs stars in Kempton entry
Mullins hails 'legend' Hurricane
Hurricane Fly: Best moments
Super Fly bows out
Belardo has six appeal - Varian
Maguire making good progress
Channon seeks Divine intervention
Time called on Telescope career
More injury woe for unlucky Russell
Charline chasing Curragh cash
Balios finished for the year
Reason back in firing Line
Newton Abbot washed away
Beloved bounds to Supreme success
Ton-up for De Sousa
Approval for new Yarmouth track
Hint takes Cambridgeshire glory
Bocca back in business
Leger hope Sumbal beaten in France
Tower-ing performance from Williams
O'Brien works his Magic again
All eyes on Pendleton at Ripon
30 August 2015Beloved rules supreme at Goodwood
Arm injury woe for Russell
Beacon shines for O'Brien
Botti banks on Binzart
Harrington ponders Jack reverse
Tullius revved up for Joel Stakes
Speculative in frame for Ayr raid
Moon dazzling for Irish Leger bid
Ivory backs Twin to peak at Donny
Golantilla 'a natural' over fences
Flintshire strikes at Saratoga
Retirement considered for Pharoah
Cummings 'a giant of the sport'
Keen Ice claims Pharoah scalp
Racing lands Winter win
O'Brien family enjoys Wexford wins
Goodwood Celebration for Kodi team
Polybius takes Hopeful honours
Twisler on the march
Rene lands Goodwood riches
Maarek shoots to Bullet victory
Hawk swoops in Prestige
29 August 2015Death of top trainer Bart Cummings
Kodi Celebration for Cox
Deegan hopeful of good Sho
Titania looks to 'step up' in Dance
Gosden youngster impresses at HQ
Ascot date for Dartmouth
Bolger seeking Curragh Smash n grab
Death of northern stalwart Charnock
Ground key for Weld big guns
Panther pleases in Newmarket work
Icon eyeing Prestige prize
Buratino in Middle Park frame
Cox hoping for Kodi Celebration
28 August 2015Devonshire chasing deserved success
All-American hero taking next step
Ground key for Cape
Rock ready to roll at Windsor
Suzi's seeking Goodwood gold
Maarek aiming to fire in Bullet
Treble top for Weld and Smullen
Baker tempted by Woodbine for Bill
Memory poised for Haydock chance
Treve clash possible for Queen
Hills to make French Connection
Forgotten horse up for Irish Leger
Bear a necessity in Celebration
Pallasator in Cup mix at Doncaster
Lynam sprinters Flying first class