Reece Webster, 17, Bathurst and his brother, Jake Webster, 15 have once again placed first and second in the meat sheep handler competition in the senior section.
Reece beat his brother by just one point this time round, meaning he has now won the competition two years in a row.
The brothers, who attend St Stanislaus College in Bathurst, each have their own sheep stud, Reece running Suffolks and Jake, Southdowns.
"I inherited my stud in 2013 off my great-grandmother so I've been running that for six years now," Reece said.
"I've just gone from about six ewes to about 30 odd, showing across Australia, winning ribbons, getting my name out there, promoting young people in the industry."
First place in the junior section, ages 10 to 14, was 12-year-old Elizabeth Sutton of Temora.
The Macarthur Anglican School student won last year and said she has been handling since she was 4-years-old at her family's stud, Wattle Farm Border Leicester.
She said she was happy with how cooperative her ram was in the competition.
"Normally at home in the paddock, he's a very rowdy one, so I was very surprised," Elizabeth said.
In second place was 13-year-old, Elizabeth Macarthur High School student, Alexia Hypatidis. Alexia said it was her first time competing at the Sydney Royal Show.
Judge and president of the Australian Stud Sheep Breeder's Association, Gavin Wall, said the overall standard of the handlers was exceptional.
The handlers were judged on their appearance, the appearance of their sheep and the way they present the sheep to the judge.
Mr Wall said one of the main things he looked for was eye-contact.
"They need to watch the judge all the time, what I was really pleased with was what I call the Mexican wave, when they turn to look at me as I move around the mat," Mr Wall said.