German raider Energizer ran on strongly to claim the Tercentenary Stakes at Royal Ascot.

Trained by Jens Hirschberger and ridden by Adrie De Vries, the son of popular stallion Monsun became the first German trained winner at Royal Ascot.

The three year old had impressively won a Listed race on debut as a juvenile but had failed to score in four subsequent starts.

He had, however, advertised his talent with a fourth placed finish behind Caspar Netscher in the German Guineas on his previous start.

The step up in trip appeared to be the making of him, however, as he ran on strongly in the closing stages of the 10 furlong Group Three to score by two and a half lengths and the same from Stipulate and Rewarded.

The runner-up was one of two horses owned by Prince Khalid Abdulla with the other, favourite Wrotham Heath, taking the field along at a decent pace.

Richard Hughes took Crius wide under the trees in search of better ground but that ploy failed to pay dividends as his mount was around 10 lengths adrift turning in before returning tailed off.

The remainder of the 10 runners were all in a position to challenge for the honours but it was the German challenger who proved strongest in recording a famous success.

"After our Guineas, we wanted to step him up in trip and we were confident going into this race," said Hirschberger.

"I didn't know the form of the other horses, but looking at Caspar Netscher's form I thought we had a good chance.

"The next race for him might be a Group One in Munich (the Grosser Dallmayr-Preis).

"That's the next plan and we might come back to England for a Group Two over a mile and a quarter."

It was 42-year-old De Vries' second ever visit to Ascot and his first British winner.

He said: "It's a great thrill. I was very hopeful especially when I saw him in the paddock nice and relaxed.

"He had been a bit too keen but with the hood on he has changed and settled in his race.

"We wanted to step him up after his last run and he showed a really good turn of foot."

Teddy Grimthorpe, racing manager for Stipulate's owner Khalid Abdullah, said: "It was a good run. He could have done with the ground a bit quicker, but it was still a decent race and he's going to be all right.

"There's probably more races in France for a mile and a quarter horse like this."

Trainer James Toller said of the third: "It was quite a jump in class. He ran a good race and he hasn't let us down. He probably wants a bit further really."