She recorded 2.25, 0.3sec inside the record set by The Flyin Doctor at Oamaru in 2004. The previous best time for a filly was 2.25.8 by Kate's First at Addington in 1997.
Bettor Cover Lover, trained at Pukekohe by Brent Mangos and Hayden Cullen for Karnup Racing Pty Ltd, is unbeaten in three starts in the South Island.
She won a yearling sale race and a heat of the Sires' Stakes at Addington as a 2yr-old. Her record stands at 13 starts for nine wins and four placings and $497,376 in stakes.
She was bred at Rangiora by Dennis Bennett and Linda Joyce and sold for $12,000 to Trevor Lindsay, of Australia, at the 2009 Premier Yearling Sale.
Bettor Cover Lover led yesterday and sprinted her last 800m in 54.4 to hold out Carabella by half a length. Carabella, winner of her other 10 starts, raced in the open throughout and outside Bettor Cover Lover from the 1200m.
Bettor Cover Lover is the fifth foal of Front Cover Lover, an unraced half-sister by What's Next to Under Cover Lover, the champion 3yr-old filly of the 1997-98 season.
All Shook Up, Arabess Raging Bull and Mach Banner all set track records yesterday.
Cran Dalgety trained four winners - Johnny Be, Tom And Jerry, Raging Bull and Double Happy. He took his tally for the season to 64 wins. He is second in the premiership to Mark Purdon and Grant Payne, who have 76 wins.
The Dalgety-trained Mirthful Mac was first past the post but he was relegated to third. The stable entrant Smiling Shard will wear half blinds in his heat of the Interdominion tomorrow night.
His stablemate Coringa Cory is also in half blinds, replacing pull-down blinds. Annecka has removable ear plugs, replacing fixed ear plugs.
Adam Sanderson has been engaged to drive I Am Legend at Invercargill on Sunday. The smart 3yr-old is eligible for the race if driven by a concession junior driver. The winner of three races and three-times placed in seven starts, I am Legend has drawn one in his first standing start. He won a standing start trial at Forbury Park on Monday.
Trainer Mark Purdon will take the reins on Dancing Diamonds in the race for 2yr-old fillies at Alexandra Park tonight. Blair Orange has driven Dancing Diamonds in her five races for four wins and a second to Veste in the Caduceus Club Classic.
Houdini Star is out of the Interdominion trotting series after the recurrence of a foot ailment.
"He trotted rough on the bend the other night and he doesn't usually," John Hay, his Ashburton trainer, said.
"It is the old injury - the ligament attached to the pedal bone in his near front foot."
The 8yr-old resumed racing a fortnight ago after an 11-month break when finished second from a 65m handicap at Palmerston North.
"I will take him home and reassess his future," Hay said.
