Team New Zealand streak away to win race two against Oracle.

Action from race two with San Francisco city in the background.

San Francisco's Golden Gate Bridge was hard to see during America's Cup racing on Monday (NZT) with heavy fog blanketing all but its highest point.

The foredeck crew of Oracle Team USA work on a head sail after losing to Emirates Team New Zealand during Race 5 of the 34th America's Cup yacht sailing race in San Francisco.

Emirates Team New Zealand skippered by Dean Barker warms up before racing against Oracle Team USA skippered by James Spithill in race five of the America's Cup Finals.

Oracle Team USA and Emirates Team New Zealand tack upwind in front of Alcatraz Island during race 5 of the America's Cup Finals on September 10, 2013 in San Francisco, California.

Emirates Team New Zealand follows Oracle Team USA around the first mark in race five on day three of the America's Cup 34.

Emirates Team New Zealand skippered by Dean Barker waves to the crowd after beating Oracle Team USA skippered by James Spithill in race five of the America's Cup Finals.

Emirates Team Zew Zealand races ahead of Oracle Team USA as they pass in front of Alcatraz Island and the San Francisco skyline during race 5 of the America's Cup Finals.

A view from above the Golden Gate Bridge during race six.

Oracle cross the finish line well ahead of Team New Zealand in race nine.

Team New Zealand and Oracle race in front of a giant cruise ship and the Bay Bridge during race nine.

Emirates Team New Zealand skipper Dean Barker celebrates after defeating Oracle Team USA skippered by James Spithill in race 11 during the America's Cup Finals.

Emirates Team New Zealand skipper Dean Barker celebrates after defeating Oracle Team USA skippered by James Spithill in race 11 during the America's Cup Finals.

Team Emirates New Zealand skipper Dean Barker talks with his crew after the scheduled second race of the day was postponed due to high winds.

Emirates Team New Zealand skipper Dean Barker celebrates after defeating Oracle Team USA skippered by James Spithill in race 11 during the America's Cup Finals.

Oracle and Team NZ speed past the Golden Gate Bridge during Race 12 of the America's Cup.

Fog descends on the race course on San Francisco Bay as Team NZ awaits the start.

Team New Zealand cross in front of Oracle on the second leg in Race 13.

Team NZ and Oracle sail side-by-side before the start of Race 13, with the Bay Bridge in the backdrop.

Team NZ chases down Oracle during the early part of Race 13, which was eventually abandoned.

Oracle take the lead in race 14 of the America's Cup.

Team NZ and Oracle race in front of the Golden Gate Bridge during Race 14 of the America's Cup.

Sir Ben Ainslie of Oracle Team USA walks off the stage from the dock-out show before going out to race against Emirates Team New Zealand in race 17.

Oracle sails ahead of Team New Zealand on their way to winning race 17.

An anguished Dean Barker with head in hands after the Team New Zealand lost race 18.

The American media have turned on Oracle, some even accusing them of "bad sportsmanship" for using their postponement card, and implying changes are imminent in the crew's afterguard.

The teams have a lay-day today and while Team New Zealand enjoyed a sleep-in on the back of their commanding 4-1 lead, Oracle awoke to some harsh criticism in the local media.

The San Francisco Chronicle couldn't understand why the card was played when there was no a structural damage to the boat or unfavourable winds to justify it.

Getty Images ORACLE SLAMMED: The American media have turned on Oracle, accusing them of "bad sportsmanship".

"Oracle just wanted to take its ball and go home . . . it sure felt like bad sportsmanship," the paper said.

"What kind of competitors walk off the playing field when things aren't going their way? Not many. But the unsavoury move was within the rules of engagement set up by Larry Ellison and his team prior to the start."

The paper said the move would further bemuse the average American sports fan, who has been struggling with some of the regatta's concepts from the outset.

They offered some perspective: "It's a little like a team trailing 35-7 at halftime at the Super Bowl but announcing, 'let's knock it off'.

"Or a baseball manager who doesn't like the next pitching matchup with his team down 3-0 in the World Series. If the sailing rule applied, he'd wait a day or two until the Big Lefty was rested enough to pitch."

The local paper, one of the few in the American media to have a handle on this troubled event, joined speculation that Oracle tactician John Kostecki would be taken off the boat after a run of poor decisions in the final that come despite his local knowledge, having grown up in the Bay.

Britain's Olympics hero Sir Ben Ainslie could move into that role, while New Zealander and Oracle syndicate chief executive Sir Russell Coutts' name was also mentioned.

Would the America's Cup's great want to risk his unbeaten record on what is rapidly appearing to be a lost cause?

Coutts' handling of what has been a problem-plagued regatta including the embarrassment of jury-imposed penalties and now a clearly ill-prepared defence of the cup, will surely be questioned.

Tucker Thompson, race commentator for the American networks, said: "This is a shocking turn of events. It's really surprising that the brains trust of Oracle would have put themselves in the position they put themselves in."

That position now sees Oracle still needing to win 10 races to keep the America's Cup while Team New Zealand need five to win it.

Racing resumes tomorrow with a double-header schedule.

Oracle cannot now withdraw from any further races without penalty. Failing to front for a race through breakage will see them forfeit the point, although Team New Zealand will need to sail the course solo to collect it.