Medinas wore down Peckhamecho on the run-in to land the spoils in the William Hill Welsh Champion Hurdle at Ffos Las.
The complexion of this competitive race changed in the straight with several horses holding chances including Tanerko Emery, owned by Ffos Las chairman Dai Walters, after the favourite Oscara Dara weakened tamely.
However, Tanerko Emery had to settle for third spot as Peckhamecho made his bid for glory only for Medinas to sweep past and score by a length and a quarter and a neck.
Wayne Hutchinson made the most of the ride on the Alan King-trained 6-1 winner as stable jockey Robert Thornton preferred Balder Succes in this valuable limited handicap.
"He travelled and jumped well. I found myself in front from the back of the third-last, which wasn't ideal where I was," Hutchinson told At The Races.
"I was floating down to two out, then Nick (Scholfield on Peckhamecho) has got a run on me down the far side, so I gradually worked my way across to give him something to aim at. He put his head down and stuck on really well.
"He has come back a fresher horse today after his break and has done the job. I've half let the race unfold as I was there soon enough three out."
Speaking from Sandown, King added: "To be honest, there's nothing between them on the ratings.
"I did say to Choc (Robert Thornton) 'which one do you want to ride?', but we both agreed he should be on Balder Succes. He was disappointing, I don't think he stayed.
"I think Medinas is qualified for the Pertemps Final and I'll also put him in the Coral Cup." Medinas was quoted at 20-1 with Paddy Power for the Coral Cup at Cheltenham.
10 October 2015Glamorous heads Irish 1-2 in Zetland at Newmarket
Court Minstrel and Evan Williams strike Silver gold at Chepstow
Grumeti outfoxes Cesarewitch rivals on dream day for Adam Beschizza
Jedd O'Keeffe in the money as Shared Equity stars at York
Aidan O'Brien hails 'special' Air Force Blue as he jets away with Dewhurst glory
Jack Garritty loses claim with York treble
Brave Gifted Master charges clear in Autumn Stakes
'Workmanlike' Intilaaq gallops at Newmarket
Budds keen on Here For The Craic claims in Irish Cesarewitch
Mangan hoping for Munster magic from Perfect Promise
Massaat leads Sheikh Hamdan assault on Dewhurst at Newmarket
Sir Mark Prescott bids to end Cesarewitch drought
Aidan O'Brien: Every chance Gleneagles will run at Ascot
Breeders' Cup 'possibility' for King George winner Postponed
'Truly exceptional' Minding has Ryan Moore purring after Fillies' Mile
Cable Bay proves up to the Challenge for Frankie Dettori
Victory for Saeed bin Suroor's First in Oh So Sharp Stakes
Jack Hobbs delights John Gosden in Newmarket gallop
Gifted Master in 'sparkling form' for Autumn Stakes, says Hugo Palmer
Marco Botti sprint star sent Trophy-hunting at York
9 October 2015Tony Martin trio revved up for Cesarewitch challenge
Quiet Reflection storms to Newmarket success for Karl Burke
Mouse Morris seeks Munster National divinity with Rogue Angel
Dynaste makes French connection for David Pipe
Hugo Palmer cool on Covert Love Breeders' Cup bid
Tote Jackpot to undergo major facelift
Air Force Blue 'very popular' ahead of red-hot Dewhurst
Dhahmaan enters uncharted territory at York for Marco Botti
Classy Lumiere to stay with Mark Johnston
Mystifiable defies absence to reward Exeter backers
Andrew Balding lines up raid on Balmoral Handicap
Paul Townend hit with ten-day ban at Tramore
Jonjo O'Neill outlines chasing plan for More Of That
Marcus Tregoning's promising Alamode returns in Oh So Sharp Stakes
Promising Run on Mile high for Newmarket quest
Karl Burke pauses for Quiet Reflection in Cornwallis
Godolphin and Local Time playing for Pride at Newmarket
Shining Emerald gleaming for Newmarket Challenge
8 October 2015Lengthy whip ban for Pat Dobbs
Powerful Aidan O'Brien squad leaves for Melbourne
Godolphin ace Emotionless in demand for Dewhurst
Francois Doumen sets sail for Ascot with Sea Calisi
Sire De Grugy 'unlikely to run' at Chepstow, says Gary Moore
Clever Cookie team sweet on Long Distance Cup at Ascot
Champions Day looks divine for Gabriel's Lad
Godolphin set to supplement Racing History for Champion Stakes at Ascot
One-day bans for riders in Kempton 'wrong stalls' incident
Ryan Moore takes the plaudits with Nottingham victory
Bertimont injury blow for Dan Skelton
Winning start over fences for smart hurdler Violet Dancer
Grand National winner Pineau De Re set for final season
Gordon Elliott outlines early plans for stable star Don Cossack
Sam Twiston-Davies relishing top job with Paul Nicholls
Aidan O'Brien's Minding and Coolmore lead Fillies' Mile field at Newmarket
Aidan O'Brien decides against sending Order Of St George to Melbourne
7 October 2015Wesley Ward keen to secure Frankie Dettori for Breeders' Cup rides
Nick Attenborough and John Blake take up charity roles
Rain wanted for Cirrus Des Aigles ahead of Champions Day at Ascot
New series of races announced by BHA and Jockey Club Racecourses
Andre Fabre waiting on Esoterique Breeders' Cup decision
Nicky Richards considering Cheltenham target for Simply Ned
Ascot ground key to Decorated Knight's QEII run
Market Rasen option for Malcolm Jefferson's Cyrus Darius
Air Force Blue on track for Dewhurst - Aidan O'Brien
Frankie Dettori dreaming of America for Golden Horn
Mecca's Angel ruled out of Champions Sprint reckoning
Guineas heroine Legatissimo likely to race on in 2016
Eduard injury blow for Nicky Richards
Paddy Power option for David Pipe's Kings Palace
Andre Fabre unveils Lockinge option for Make Believe
Andre Fabre hoping for 2016 campaign with Arc third New Bay
Henry Candy eager to step up to a mile with Foret second Limato