The Italian skipper, who has been involved with the America's Cup for more than 15 years, said in his experience protests and jury hearings can be extremely unsettling for a team.
Try as they might, it is difficult for the sailors to separate themselves from the politics that go on behind the scenes. Given the Oracle team are facing the threat of serious sanctions over what has been termed the biggest scandal in 162 years of the America's Cup, Sirena said this case will be even more of a distraction than most.
"One week from the Cup you want to be focusing on the sailing and try to refine the tools you have and the crew.
"Obviously something like that is a pretty big disruption because there will be an effect coming out from the jury decision and how bad and what penalties they get we don't know, but from experience I don't think it's going to be a soft result."
While the Oracle team are hunkering down and saying little publicly while the hearings play out, they were sighted on the race course yesterday, with one boat in action as they continue their preparations for the Cup match beginning this Sunday.
Oracle had first access to the racecourse followed by Team New Zealand and Luna Rossa, who are now training partners.