Emirates Team New Zealand, left, and Luna Rossa Challenge, right, of Italy, maneuver for the start of the fourth race of their America’s Cup
Emirates Team New Zealand, left, and Luna Rossa Challenge, right, of Italy, maneuver for the start of the fourth race of their America's Cup challenger series final sailing event on Wednesday, Aug. 21, 2013, in San Francisco. Emirates Team New Zealand won both of their two races on Wednesday. (AP Photo/Eric Risberg) ( Eric Risberg )