Team New Zealand have pulled out of their final America's Cup practice race in Bermuda, against Ben Ainslie Racing, after a "soft touch" on their foils.
There were no reports of damage but the decision to quit, while holding a strong lead over BAR, has confirmed how the America's Cup racing could be drastically affected by the most random of issues, debris in the water.
TNZ crushed the French in their first practice race this morning. They were then tested by BAR in the pre-start with TNZ helmsman Peter Burling finally winning the advantage.
But on the top mark for the final time, the decision was made to pull out when they felt something hit the foils. An inspection was made but it was unclear if TNZ sent a diver down.
Debris and sea life is an issue given the delicate nature of foiling - a TNZ associate told NZME they pulled a plastic crate out of the water this week.