D'Arcy was convicted in the Downing Centre Local Court for his attack on former swimmer Simon Cowley following the 2008 Australia Olympic trials.

He received a suspended sentence of 14 months and 12 days.

D'Arcy was booted off the Beijing Olympics team after the Australian Olympic Committee deemed he had breached the team code of conduct.

He continued swimming in the hope of returning to the national team this year and redeeming himself at the world championships.

He earned selection at last month's trials in Sydney by winning his 200m butterfly in a record time.

However his position on the swim team bound for Rome was still under review by a Swimming Australia Judiciary committee hearing.

But at a Swimming Australia Board meeting on Monday the sport's governing body decided to revoke his position on the team.

"On 22 March 2009, Nicholas D'Arcy was selected as a member of the Australian swim team for the 2009 FINA world championships,'' said a Swimming Australia statement.

"On 24 March 2009 and as a condition of membership on the Australian swim team, Nicholas D'Arcy agreed to be bound by the Swimming Australia Limited (Swimming Australia) Team By-Laws.

"Following Nicholas D'Arcy's conviction, the Board of Swimming Australia met on 6 April 2009 and unanimously resolved that Nicholas D'Arcy's membership of the Australian swim team to compete in Rome at the 2009 FINA world championships be terminated immediately under Swimming Australia Team By-Law 17.1.

"The resolution of the Board of Swimming Australia does not affect the investigation being undertaken by the Swimming Australia Judiciary Committee as to whether Nicholas D'Arcy has breached Swimming Australia's General By-Laws.

"Swimming Australia notes that the decision to exclude Nicholas D'Arcy from the 2008 Australian Olympic Team was made by the Australian Olympic Committee and not Swimming Australia.''