Four-time America's Cup-winning crew member Simon Daubney quit Alinghi Thursday after failed a doping test in June.

Simon Daubney, who helped the Swiss syndicate win its second straight America's Cup trophy in July, faces an automatic two-year ban after testing positive for a recreational drug on June 23, America's Cup Management chief executive Michel Hodara said.

The test was taken on the opening day of this year's competition, which Alinghi eventually won 5-2 over Emirates Team New Zealand in Valencia, Spain.

Daubney, who also won titles in 1995 and 2000 with Team New Zealand, said he was told of the positive result on July 13, 10 days after Alinghi's win. The 48-year-old New Zealander denied knowingly taking a banned substance.

"However, until this matter is completely resolved, I have resigned from Alinghi so that they can go about their business without distraction," Daubney said in a statement.

The case will next go before the international sailing federation, said Hodara, who added that Daubney's positive result was the only one of the competition.

Daubney, who said he wants to return to sailing, added that he went before an America's Cup jury to state his case.

"The jury recognized that he wasn't at fault," Hodara said. "We won't know the end result until the jury renders its verdict and we get the full written decision."