HORSHAM-OWNED May's Dream ran a gallant second to favourite Guelph in Wednesday's Group 1 Thousand Guineas at Caulfield.
Jockey Nick Hall gave the filly every chance to win the race but three-year-old star Guelph was too strong, leading from the start.
Team Darley's Guelph - a three-time winner at Group 1 level - started as an odds-on favourite for the $500,000 race.
Guelph was priced at the fixed odds of $1.40 on Tuesday, with May's Dream the only other contender under $10 at $8.
Horsham racehorse owner and breeder Worrall Dunn had taken a positive attitude into the race.
"Our trainer doesn't believe we can win, but I'm an owner and owners think anything is possible," he said.
"Darren Weir thinks Guelph is an exceptional filly, but he also said he couldn't have May's Dream any fitter. He is very happy with her."
May's Dream, the daughter of New Approach and She's Archie, drew barrier three for Wednesday's 1600-metre trip.
Dunn, who owns May's Dream along with family members and a syndicate from Horsham's White Hart Hotel, is also looking to run May's Dream in the Oaks on November 7.