Background
Mabbott was born in 1960 in Carterton.
Mabbott was born in 1960 in Carterton.
He began rowing at Westlake Boys High School in the Auckland suburb of Forrest Hill, the same school as fellow Olympic Bronze medallist Eric Verdonk. Mabbott was selected in the coxed four at the 1980 Summer Olympics in Moscow but did not compete due to the Olympics boycott.
At the 1983 World Rowing Championships at Wedau in Duisburg, Germany, he won a Gold medal with the New Zealand eight in seat six. At the 1984 Olympics, Mabbott won the bronze medal in the coxed four along with Don Symon, Kevin Lawton, Ross Tong and Brett Hollister (cox). Mabbott competed at the 1986 Commonwealth Games in Edinburgh winning a silver medal with Ian Wright in the coxless pairs and a bronze medal in the eights.