Team New Zealand fans say 'we are loyal', but the TAB has seen a surge in support for Oracle as doubt starts to set in.
According to the TAB's website "Oracle have risen from the dead", so the betting company has now "resurrected the overall winner option".
"Having won both races...Oracle are now back in the hunt for the America's cup with a commanding streak of form. We've had to do an about face and re-open the overall winners book," the TAB said.
Watch the races live at tvnz.co.nz/americascup and on TV ONE from 8.00am NZT.
The TAB's Mark Stafford told ONE News: "Just about 95% of the money has been on Oracle. It's unbelievable."
And all bets are on again this morning, with Team NZ at matchpoint they are favoured at $1.37, up from $1.01 last week, to lift the Cup in the race to nine wins, while Oracle is on $2.85.
The TAB said Oracle was now the favourite in its Race 16 winning margin option.
If Oracle beat Team NZ in race 16 the payout for the racing is $1.65 versus $2.10 for an Team NZ win.
The TAB is looking at a six figure loss if Oracle wins overall, but the agency's total turnover for this America's Cup is close to reaching seven figures.
Mr Stafford said some had placed $10,000 bets, and at $3.80 that's a $38,000 return.
"Since then a swag of them at $2000, $3000, but lots of $300 and $400 as well, people are confident."
Team NZ fan Kaylene Watson she feels like crying after yesterday's double loss.
"It feels like it just might be starting to slip away."
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