Sailing:

Having lost two days' sailing in the first week, storms continue to disrupt the early trials in the America's Cup, writes Stuart Alexander from San Diego.

The weather has led to syndicates being short of testing, tuning and training practice. It is not just the strength of the winds that causes the problem. They are rarely above 20 knots.

If the wind is in the south then it can both try to turn the direction of the current and, coupled with a shoal just south of Point Loma, build up a nasty breaking chop on top of the swell at the entrance to San Diego Bay, out of which Dennis Conner's Stars & Stripes, America3, Team New Zealand and Nippon Challenge have to be towed.

If the wind is in the west an even nastier sea can build in the entrance to Mission Bay, where the other six syndicates are based.