A G1 win aboard I Am Unstoppable on Derby Day would go straight to the top of hoop's career highlights

No Stopping Spain this spring

Zac Spain has tasted Group 1 glory twice before, but you get the feeling if I Am Unstoppable can win the Coolmore Stud Stakes on Derby Day, it will go straight to the top of highlights in his career.The 27-year-old first piloted Streets Of Avalon to win the C.F. Orr Stakes in 2021 before doubling his elite-level haul when he and Lombardo combined in the Goodwood 12 months later.But the role he has played in the education of the I Am Invincible colt for his good mate Lloyd Kennewell would make it all the more satisfying."I've done a lot of work on him, not just his two and three-year-old season but coming through his education and I've always loved the horse," Spain said."Streetsy (Streets Of Avalon), he was just tough and one of those old war horses, whereas this bloke has that electric turn of foot and is definitely one of the better colts I've sat on."WATCH: Spain excited by I Am Unstoppable<div>&nbsp;</div>Spain also rode Viddora in three starts across her career.Having won his first two starts, including the Redoute's Choice Stakes, before a slashing return in the Vain Stakes, Spain is rightfully confident about I Am Unstoppable's spring campaign, which includes the Poseidon Stakes, Danehill Stakes and then into the G1 Coolmore."He is still learning his craft," Spain explained."First-up he just got a little bit wayward around the turn and stepped slow and never really travelled, which I'm not too worried about because he can overdo things at times, so him switching off in the early stages is really good and his sectionals on the clock just showed how good he really run."Spain, who recently returned from a US holiday with Kennewell, is also excited to partner he and Lucy Yeomans other exciting colt Snippety Legend this spring.