(Reuters) - SoftBank Team Japan beat Sweden's Artemis Racing in the first of their best-of-nine America's Cup semi-final challenger races.
In the other semi-final on Monday between Land Rover BAR and Emirates Team New Zealand, the British crew skippered by Ben Ainslie had to retire after a breakage in its "wing" sail, giving New Zealand victory.
(Reporting by Alexander Smith in London; Editing by Pritha Sarkar)