12/01/2009 1:00AM

Diamondrella staying with Stevens

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INGLEWOOD, Calif. - Diamondrella, a two-time Grade 1 winner this year who was third in the Matriarch Stakes at Hollywood Park last Saturday, will remain in California in 2010, trainer Gary Stevens said.

Owned by IEAH Stables, Diamondrella, 5, has won 8 of 19 starts and $820,576.

"The plan is that she stays in training," Stevens said.

In the Matriarch over a mile on turf, Diamondrella closed from last in a field of six under jockey Alex Solis to finish 2 1/4 lengths behind the heavily favored winner, Ventura. In 2010, Stevens, the retired Hall of Fame jockey, envisions running Diamondrella in longer turf races.

"Alex felt she could go farther on firm ground," Stevens said after Saturday's race.

Previously trained by Angel Penna Jr., Diamondrella had her best season in 2009, winning 3 of 6 starts and $584,000. She won the Grade 1 Just a Game Stakes at Belmont Park in June and the Grade 1 First Lady Stakes at Keeneland in October. In the Breeders' Cup Turf Sprint at Santa Anita last month, Diamondrella finished 11th of 14.

At one point in 2008-09, Diamondrella put together a six-race winning streak that included three minor turf stakes at Belmont Park and Keeneland. The streak ended with a sixth-place finish in the Presque Isle Downs Masters Stakes in Pennsylvania in September.

St Trinians comes back in allowance

For the latest comeback of the 4-year-old filly St Trinians this week at Hollywood Park, trainer Mike Mitchell had the choice of an allowance race on Thursday or Saturday's $150,000 Bayakoa Handicap.

Mitchell chose the allowance race, where St Trinians figures to be a strong favorite, but hopes that she will be running in a stakes at Santa Anita in early 2010.

Back in March, St Trinians made her U.S. debut at Santa Anita, winning an optional claimer over a mile by four lengths. Concern over an ankle kept her out of training until this fall. She returns from a layoff of nearly nine months in Thursday's race, which is run over 7 1/2 furlongs.

"She has a good outside post," Mitchell said.

"She'll be able to sit off the pace."

Mitchell said that St Trinians did not need surgery for the ankle problem.

"We decided to give her some time," he said.

St Trinians is the only filly in Thursday's race who won her last start. Gambler's Justice, fourth in the Cat's Cradle Handicap here Nov. 15, will attempt to end a nine-race losing streak dating back to the CTBA Marian Stakes at Fairplex Park in September 2008.

Black Mamba works for final start

Black Mamba, the New Zealand-bred mare who has won five stakes in this country, worked a mile in 1:42.80 at Santa Anita on Tuesday, her final workout before a scheduled start in the Hong Kong Vase on Dec. 13.

Last month, Black Mamba was purchased for $1.5 million by Evergreen Stables at the Fasig-Tipton November sale.

Sadler said that Hong Kong Vase will be Black Mamba's final start before she is sent to Australia to be bred.

The Hong Kong Vase is run over 1 1/2 miles on turf. Black Mamba won the Dowager Stakes against fillies and mares over 1 1/2 miles on turf at Keeneland in October. Last December, she was fourth against males in the Grade 1 Hollywood Turf Cup over that distance.

Sadler trained Black Mamba for Doubledown Stables before she went through the auction in Kentucky last month.

"She can stay really well," Sadler said. "I know she'll run a good race, but those things are really tough."

Juddmonte bringing fewer horses to U.S.

Juddmonte Farms was a powerful force when aligned with trainer Bobby Frankel, winning Eclipse Awards by the fistful. Their success came with horses who began their careers in the United States, like Empire Maker, or were repatriated, like Ventura, who closed her magnificent career with a victory Saturday in the Grade 1 Matriarch Stakes.

Humberto Ascanio, Frankel's longtime assistant, saddled Ventura. But he only has a handful of Juddmonte horses now. According to Juddmonte's Garrett O'Rourke, who was at the Matriarch, the influx of Juddmonte horses this year from Europe was truncated owing to the health of Frankel, who died Nov. 16.

"We didn't know what the situation would be, so we haven't brought over as many," O'Rourke said. "We didn't want to face the issues. Usually those decisions are made in September."

O'Rourke and Ascanio both said that one of Frankel's final decisions was to postpone Ventura's retirement after she finished second in the Breeders' Cup Filly and Mare Sprint. He wanted to run her one more time in the Matriarch.

"Bobby said that Ventura should have two half-mile works and she'd be ready," O'Rourke said. "Humberto just gave her one half-mile work. Being the professional he was, I think Bobby would be proud that Humberto called an audible and it worked out. That was Bobby's real brilliance. Nothing was ever written in stone."

Ascanio said the win meant a lot.

"That's the one I wanted. This one. For him," Ascanio said of Frankel. "I just tried to do it like Bobby. I think if he was here, and he saw how she was doing, he'd have only given her one work, too."

Owner reunites with Rosario in Miesque

A longtime friendship contributed to owner Jose Singer and jockey Joel Rosario combining forces to win the Grade 3, $100,000 Miesque Stakes on Sunday with the 2-year-old filly The Mailet.

Rosario began his career in his native Dominican Republic before coming to the United States.

Rosario "used to ride my horses in the Dominican Republic. I started Joel off there," Singer said after The Mailet beat In the Slips by a half-length in the one-mile grass race.

"He's a very good friend of mine," Rosario said.

The Mailet, a daughter of Rock Hard Ten trained by Bruce Levine, was well beaten in her first two starts, which came on dirt at Saratoga and Belmont Park, then scored a 43-1 upset against maidens at Belmont when moved to turf for the first time Oct. 22. She arrived at Hollywood Park in time for Rosario to work her once before the Miesque.

- additional reporting by Jay Privman