"That was very impressive. She's always showed a lot at home and in her trials," he said.
"It was good to see her produce it on raceday as she behaved herself nicely and had a nice day out.
"She will have a bit of a break now and come back for those early 3-year-old races.
"I really rate her, she's a lovely type of filly and the first winner for Sacred Falls."
From the first crop of the four-time Group 1 winner, Shoshone was bred by Waikato Stud and sold for $150,000 through their Book 1 draft at the 2018 National Yearling Sale.
Lammas was equally impressed by the filly's performance at her first time to the races following three rides on her at the trials.
"I wouldn't say she copped the ground but she was the best horse in the race," Lammas said.
"She's a pretty classy filly.
"She has jumped and put herself there, then relaxed nicely.
" [Yesterday was] the first time I've asked her [for an effort] and she has found for me."
Sacred Falls will stand his fifth season at Waikato Stud this year for a fee of $20,000 + GST.
- NZ Racing Desk