The former Otago gymnast and rugby representative has finished in eighth place at the 2017 Crossfit Games in Madison, Wisconsin.
It was an impressive effort from the 26-year-old rookie, who was competing in the tournament as an individual for the first time after helping her gym place third in the team event last year.
Greene, who lives in Abu Dhabi and was representing the African region, finished the opening day in third place but fell down the standings on day two following the snatch event.
However, the 163cm New Zealander achieved her goal of finishing in the top 10.
Her mother, Anita Greene, was in Wisconsin to watch her daughter compete. She could not be reached for comment yesterday but said late last week how extremely proud of Jamie she was.
``The next few days may not go her way or they may go her way. But whatever happens, [the opening day] has been a pretty amazing day.''
Tia-Clair Toomey, who finished second in 2015 and 2016, held off fellow Australian Kara Webb to win the title by two points with a score of 994.
Toomey's background is in track and field but she switched to weightlifting and qualified for the Rio Olympics where she placed 14th in the 58kg category.
Iceland's Annie Thorisdottir, who won the title in 2011 and 2012, claimed third overall.
United States athlete Mat Fraser went back to back to win the men's title. It was his fourth consecutive podium finish.
