Spieth will step up to 1400 metres for the first time in his racing career in the 2015 Caulfield Guineas Prelude and trainer Bryce Heys that the Thorn Park colt is no certainty to run out the trip strongly in the Group 3 event in Melbourne on Saturday.
Spieth did plenty wrong when he made his racing debut with a second place finish in The Grand Frankston Hotel Handicap (1200m) at Sandown on September 2, but he was able to get the job done in comfortable fashion in the Burdens Plumbtec Maiden Plate (1200m) at Pakenham on September 16.
Heys told Racing Ahead that Spieth is bred to be able to run out a strong 1400 metres, but he admits that the three-year-old needs to be able to do it on race day in the Caulfield Guineas Prelude this weekend to be any chance of pressing on to the Group 1 Caulfield Guineas (1600m) on October 10.
“He is only in the infancy of his career, but we just want to give him the chance to do it over 1400 and I wanted to give him a run at Caulfield,” Heys said.
“This is a suitable race going forward.
“It is a massive ask and we have to run well on Saturday to even be considering the Guineas.
“We will only be going there should we be in the mix on Saturday, but we have to give him the opportunity to do it.”
While Heys is unsure about how Spieth will handle a tough 1400 metres in the Caulfield Guineas Prelude, he could not be happy with his condition ahead of the Group 3 race.
Heys said that Spieth took plenty of benefit out of his maiden race win and he could not have been happier with the way that the talented colt worked this morning.
“He is excellent and he is right where we want him,” Heys said.
“We left a little bit in the tank there provided he got through last Wednesday for a possible tilt at the Guineas Prelude and I thought his work yesterday was the best of his preparation.
“He is a pretty good track worker and he did it under his own accord.
“His condition is just immaculate.
“He has jumped out of the ground since he got to Melbourne.”
Spieth was one of 16 horses that were included in the 2015 Caulfield Guineas Prelude field that was released this afternoon and he is set to take on the likes of Dal Cielo, Odyssey Moon, Ready For Victory, Metallic Crown and Bon Aurum in the Group 3 event.