Photo Gallery: AC45s in San Francisco
Oracle Racing's Capsizes Boat #5 in Exhibition Race

Fast, but still upright. How fast does an AC45 go? Photo:©2011 Guilain Grenier/Oracle Racing

Photo:©2011 Guilain Grenier/Oracle Racing

Photo:©2011 Guilain Grenier/Oracle Racing

Photo:©2011 Gilles Martin-Raget/americascup.com

Photo:©2011 Gilles Martin-Raget/americascup.com

Photo:©2011 Gilles Martin-Raget/americascup.com

Photo:©2011 Gilles Martin-Raget/americascup.com

Photo:©2011 Guilain Grenier/Oracle Racing

Photo:©2011 Guilain Grenier/Oracle Racing

Note crew-sized hole in wingsail, where the skipper was thrown through (see video).
 Photo:©2011 Guilain Grenier/Oracle Racing

Traditional Designs are less likely to pitchpole, such as the replica of the famous Schooner America, namesake for the Auld Mug.  Photo:©2011 Guilain Grenier/Oracle Racing
 

Yes, that's Russell Coutts really flipping his catamaran, in an exhibition race on San Francisco Bay.
See video at YouTube

Oracle crew Shannon Falcone was injured, but able to walk to an ambulance to be taken for x-rays and further evaluation at the hospital.

“We got caught in the pre-start at the wrong angle and paid the price,” said Coutts, who fell through the lower part of the front element of the wingsail. “The boats are spectacular, hard to sail. They’re gonna test the best sailors in the world. Luckily I had the crash helmet on.”
Story at Oracle Racing Team Site

Also see near-capsize from Day 2:
 Photo gallery and links at CupInfo