James Magnussen, once Australia’s biggest swimming star, will take the next year off from competition to rest a shoulder injury, according to Australian media.
Magnussen, 25, won the 2011 and 2013 World Championships 100m freestyle titles but took silver at the 2012 London Games, .01 behind American Nathan Adrian.
Magnussen struggled the last three years.
He missed the 2015 World Championships due to left shoulder surgery and conceded the injury may have hampered him at the Australian Olympic Trials in April, when he failed to make the Rio team in an individual event.
Magnussen helped the Australian 4x100m free relay team to bronze in Rio, after he led off a quartet in London that finished fourth.
Australia is loaded with younger talent in the 100m free, including Olympic champion Kyle Chalmers, who is 18, and 2015 World silver medalist Cameron McEvoy, who is 22.Follow @nzaccardi