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Derby-winning trainer Danny Riordan has passed away

News broke earlier today that Danny Riordan, trainer or Derby winner Rio Quattro has died at the age of 84.

Author
Matt Newman
05 Nov 2026
Danny Riordan

Picture - Steve Nash 

Rio Quattro landed Riordan his Derby triumph 

Danny Riordan, the hugely respected and much-loved English Derby-winning trainer, died today. He was 84.


Essex-based Irishman Riordan trained 2015 Derby champion Rio Quattro to victory at Wimbledon, the powerful-running June 12 son of Ace Hi Rumble and Droopys Geneva having the distinction of winning the richest ever Derby given the William Hill-backed Classic was worth £250,000 to the champion.


Victory sparked glorious scenes for Riordan, who part-owned the Dunphys-bred star along with the Harkness family, the late Bill and Margaret Harkness, and their son Richard.


"Danny hadn't been well and had been in hospital for a time but was back home," said former RPGTV man and odds-compiler Harkness, "but I think he thought he'd turned a corner and we'd arranged to speak in a couple of weeks' time.


"Sadly that wasn't meant to be and today is a really, really sad day, and my thoughts go to Danny's wife Eileen and the rest of the family."


Of that heady night at Wimbledon in 2015, Harkness added: "That was an amazing night - and one which I'll never forget. Quattro just got stronger as the event progressed and had a real following come final night and the cheers when he hit the front will always live with me.


"It was spine-tingling. He got himself in a great position down the back and the rest is history - and it was history given the prize-money involved, of course.


"We were a close-knit team - Danny, mum and dad, and Barbara (Sealey) - and they were very special times."


Riordan might have enjoyed his greatest success on the track with Rio Quattro but he handled a host of other star performers.


Among his other major winners were Gold Collar hero Rio Scorpio, dual Derby semi-finalist Rio Riccardo, who also won the Monmore Puppy Derby, another Derby semi-finalist and Derby consolation winner Droopys Corleone, and Golden Jacket winner White Soks Roks. Rio Shadow also broke the 55m track record at Catford.


Funeral details will be announced later.

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