"Often you have these horses in these races and you think beforehand, it would be great if they could all win but more often than not you go home disappointed," he said.
"But it all came together on Saturday and was a great result, an exciting weekend for everyone involved.
"Shocking had such a great season last year and this is just a continuation from that. And we all know Priosir is a horse on the up. He started off at a $7000 service fee and he's just done such a good job.
"The market overlooked Dark Destroyer a bit but he was favourite for a Group One in Australia when he ran fourth in the Queensland Derby [Group 1, 2400m] so we knew he was a Group 1 animal. Andrew [Scott] and Lance [O'Sullivan] had him ready on the day and [owner] David Archer's luck continued.
"It will be interesting to see how the horse goes now because we know that he stays. He might be a chance to win the triple crown at Hastings."
It was the third time a Rich Hill stallion had provided owners David Archer and Diane Wright with a Group 1 winner after Pentire's 10-time Group 1 winner Mufhasa and Jimmy Choux's three-time Group 1 winner Bostonian.
"You've got to hand it to David. That horse was passed in at the sales but David went back and looked at him again and bought him. He's certainly got an eye for a good horse," Thompson said.
Proisir's service fee stands at $17,500 plus GST and Thompson said he continued to find favour with breeders.
"The last few years his books have been bigger and quality is the key thing now. He's proven he can upgrade mares," said Thompson, who expected Dark Destroyer's win would see breeders fill his remaining service slots.
"All these horses were conceived off a $7000 service fee and he's hardly had a yearling in Book 1 at the sales. But that's all going to change. This is his best crop of yearlings this year and he's got another lovely book of mares to serve.
"He's always sold well but his better quality mares are coming through now and this will just add to his profile. It's already pretty high. Everyone knows what he's achieved off the lesser quality mares so when the progeny of the really good mares start hitting the sales ring, that will be the key."
Dark Destroyer became Proisir's second individual Group 1 winner after Levante, who secured the Telegraph (1200m)-BCD Group Sprint (1400m) double last season.
I'm Thunderstruck added to his previous Group 1 win in the Toorak Handicap (1600m) and to Shocking's previous Group 1 winner Fanatic, in the 2016 New Zealand Oaks (2400m) at Trentham.
"Halfway down the straight, Alligator Blood had skipped clear and he wasn't stopping and you thought he'd run a rather unlucky second because he was held up but the last 50m he just showed how much he wanted to win," Thompson said.
"People might overlook the fact that Shocking won that race himself. I know the Melbourne Cup is his big profile race but he did win the Makybe Diva Stakes too.
"He had another really nice winner at Ruakaka too in Vegas Strip. He seems to get winners every week, Shocking. All distances and both sexes. He was second-leading stallion in Australasia last season for stakes winners to runners which is a pretty fair feat."
It was the second time Rich Hill stallions had produced two Group 1s on a day after Pentire gelding Pantani won the Group 1 Adelaide Cup (3200m) and Bahhare filly Dowry won the Group 1 South Australian Oaks (2500m), both at Morphettville on May 17, 2004.
"Group 1s are Group 1s for a reason. There's only so many of them and they're bloody hard to win," Thompson said.
"When you get the opportunity to stand these horses, you do it because you think they have the right credentials to be successful, good racehorses with good pedigrees and lovely looking horses but that doesn't guarantee success.
"So it's pretty satisfying how it's all come together and how well the last 12 months have gone."
In Shocking, Proisir, Vadamos, Satono Aladdin and Ace High, Rich Hill Stud boasts a remarkably strong roster.
"Pentire set the benchmark. He sired 16 Group 1 winners and you could reel off some greats of the turf with horses he sired," Thompson said.
"Our breeding industry, stallion-wise is in great shape at the moment. We just need that investment in broodmares at the moment but our horses just keep performing in Australia and it just shows we've got the stallions to be doing that."
- NZ Racing Desk
