The performance continues a breakout 2019 for Merrick, who finished second at New Zealand's Gravel and Tar race, and was crowned New Zealand's Under-23 time trial champion.
Now, with some help from also-promising Kiwi riders in the Mike Greer Homes squad, such as fellow 18-year-old Niamh Fisher-Black, Merrick has claimed the best result of her career – and one of the best by any young Kiwi cyclist.
There was also some success for Kiwi riders on stage three of the men's Herald Sun Tour today.
22-year-old Luke Mudgway, who has had an excellent start to 2019 racing domestically, finished fourth on the stage, as part of a nine-man breakaway which stayed away from the peloton.
The Team Sky duo of Luke Rowe and Owain Doull were too powerful, crossing the line together as Doull took the stage victory, while Mudgway finished 36 seconds back to earn a solid fourth place in the biggest race of his career to date.
Canadian star Michael Woods leads the race by four seconds over fellow big name Richie Porte, ahead of the decisive penultimate stage tomorrow.