A training session in the Gulf of Naples ahead of the second preliminary regatta of the 38th Louis Vuitton America's Cup ended in a collision between the British GB1 AC40 and a support boat operated by Tudor Team Alinghi.

According to Il Mattino Napoli, the British boat sustained damage after striking the Swiss team's chase boat during training. The report states that an English helmsman suffered a slight facial injury in the incident.

The Naples preliminary regatta was scheduled for 24–27 September.

No further verified details were available about the injured sailor's identity, the extent of the damage to either boat, or the circumstances of the collision. No independently confirmed medical update or official finding on responsibility has been reported.