< back
Sport Swimming
NOC Australia   
Born15 Aug 1991 in Canberra, AUS
Height1.73 m
 Human Interest 
Further Personal Information
Brisbane, QLD, AUS
Higher education
Commerce, Marketing - Australian National University: Canberra, ACT, AUS
Sport Specific Information
When and where did you begin this sport?
He began club swimming at age nine.
Why this sport?
He chose the sport due to his father, who swam internationally for New Zealand. "I pushed my parents to allow me to attend more swim sessions and at age 13 I was swimming 8-10 sessions per week. I enjoyed the training, the close friends I had in my squad, and I loved winning."
General Interest
Treff, Ben (swimming.org.au, 24 Jul 2011; 28 Nov 2013; Instagram profile, 27 Mar 2021)
Surfing. (sqdathletica.com, 01 Mar 2018)
Memorable sporting achievement
Winning gold in the 50m backstroke at the 2014 Commonwealth Games in Glasgow, Scotland. (results.gc2018.com, 27 Feb 2018)
Hero / Idol
US swimmer Aaron Peirsol, New Zealand rugby player Dan Carter. (results.gc2018.com, 27 Feb 2018; swimming.org.au, 24 Jul 2011)
In 2018 he participated in the Commonwealth Games selection trials after overcoming shoulder tendinitis. (smh.com.au, 04 Mar 2018, 27 Feb 2018)
Sporting philosophy / motto
"Trying is not doing." (swimming.org.au, 24 Jul 2011)
Awards and honours
In 2014 he was named Sports Star of the Year by the Australian National University. (anu.edu.au, 22 May 2015)
Famous relatives
His father Mark Treffers represented New Zealand in swimming at the 1972 and 1976 Olympic Games. He also competed at three editions of the Commonwealth Games, winning a gold medal in the 400m individual medley in 1974. His aunt, Lynne Dalzell, and his uncle, Paul Rowe, represented Australia in swimming. (news.anu.edu.au, Spring 2011; canberratimes.com.au, 25 Jul 2014)
Other information
In late 2016 he moved from the Australian Institute of Sport [AIS] to Somerset Swim Club in Gold Coast, QLD, Australia, to be coached by Ashley Callus, after his former coach John Fowlie left the AIS. "I needed a change of scenery and my coach, John Fowlie, isn't at the AIS any more so one thing led to another. A change can be a breath of fresh air. I've got a different sort of balance up here. It's been a great move in terms of keeping me swimming, because I don't think I could have kept going if I stayed in Canberra." (smh.com.au, 27 Feb 2018; canberratimes.com.au, 12 Apr 2017)

Since October 2018 he has worked as a consultant at the Brisbane branch of EY, a global consulting firm specialising in financial services. (LinkedIn profile, 01 Apr 2021)

 Competition Highlights
World Championships
Rank Year Venue Event Result
Semifinal 2015 Kazan, RUS 100m Backstroke  DSQ
3 2015 Kazan, RUS 50m Backstroke 24.69
Semifinal 2011 Shanghai, CHN 100m Backstroke 53.87
2 2011 Shanghai, CHN 4 x 100m Medley Relay  
World Championships Short Course
Rank Year Venue Event Result
8 2010 Dubai, UAE 50m Backstroke 23.68
Heats 2010 Dubai, UAE 100m Backstroke 52.53
5 2010 Dubai, UAE 4 x 100m Medley Relay 3:24.46