11/30/2006 1:00AM

Wrenice, Mystery Classic bring aura to big day


PWrenice and Mystery Classic each come into Saturday night's Texas Champions Day program of eight statebred stakes at Sam Houston Race Park on significant rolls. Wrenice has won her last four starts by a sum of more than 34 lengths, and Mystery Classic his last five by more than 25.

In addition to being bred in Texas, both horses share a tie in rider Bobby Walker Jr. He has been aboard each of them for the duration of their win streaks, and on the richest night of the meet Saturday Walker will ride Wrenice in the $50,000 Bara Lass and Mystery Classic in the $50,000 Spirit of Texas.

"They're both very, very fast horses," said Walker.

"And both their trainers, they keep them ready to go without having them over the top."

Randy Mayfield trains Wrenice, who has been one of the region's most exciting 2-year-old fillies since she won her maiden in a division of the $125,000 Texas Stallion Stakes at Lone Star Park in July.

One start later, she fired off a 17-length win in an allowance at Retama Park to earn a Beyer Speed Figure of 95. She followed that with a win in another division of the Texas Stallion Stakes. In her most recent start, Wrenice set the pace en route to a nine-length score in the $45,000 Houston Chronicle, earning a Beyer of 92.

"She's big, and she's strong and she's extremely fast without being asked," said Walker.

Wrenice figures to be prominent again in the Bara Lass, when she will attempt to win beyond six furlongs for the first time. The race is run over seven furlongs, and she will break from gate 10.

"I love the post," said Walker. "I'll just sit there with her and try to keep her relaxed as best I can and wait as long as I can to use any horse at all."

Mystery Classic heads Spirit of Texas

Bob Schultz trains Mystery Classic, who made his stakes debut last out and won the $40,000 Watson MacManus Memorial at Retama, earning career-best Beyer of 102.

Mystery Classic's win streak started in June, when he was an 8 1/2-length winner of a first-level allowance at Lone Star. He will break from the rail Saturday.

"He's very athletic and very fast," said Walker. "If he gets away clean, anybody who comes along, he's capable of going as fast as they're going. While they're straining, he's not going to be straining."

Mystery Classic's chief rivals in the Spirit of Texas, a six-furlong race for 3-year-olds and up, include multiple stakes winner Charming Socialite and Remington Park shipper Seneca Summer.

I.B.'s Halo vs. statebreds in Martanza

I.B.'s Halo returns to the statebred ranks for the $75,000 Martanza at one-mile following a sharp stakes win last out in Louisiana. The Martanza is the richest offering for fillies and mares on Texas Champions Day.

I.B.'s Halo won the $50,000 Golden Triangle last out, getting up for a half-length win in the seven-furlong race, which was run around two turns at Delta Downs. Jeff Burningham has the mount for trainer Pamela Simpson.

* There is one runner in the $50,000 Groovy 2-year-olds who is proven at the race's seven-furlong distance, and that runner is Hadacure. He accomplished the feat in August, when he won the $50,000 Ellis Park Juvenile in a dead heat. Hadacure returns to racing with statebreds for the Groovy after finishing fourth last out in the $100,000 MEC Mile at Remington. Trainer Joe Petalino has given the mount to Cliff Berry.

* Northern Scene ships in from Kentucky for the $50,000 Richard King, a 1 1/8-mile turf race that drew a solid assortment of older horses. Others in the 10-horse field include stakes winners Goosey Moose, Favorite Jazz, Oncearoundtwice, and Rain on Monday. Northern Scene was second by a neck in last year's Richard King. Trainer Morris Nicks has given the mount to John Jacinto.

* Open Meadows appears to face little opposing speed in the $50,000 Yellow Rose, a six-furlong stakes for fillies and mares. She was third in the $50,000 Ada at Remington in her last start Nov. 4, and before that won the $40,000 Selma at Retama. Justin Shepherd has the mount for trainer Jack Bruner.

o Wild Encounter will be looking for her fourth straight win when she makes her stakes debut in the $50,000 San Jacinto. The 1 1/16-mile turf race is for fillies and mares, and other top contenders include Tunnel Time, Betty Garr and Behrenitall. Roimes Chirinos has the mount on Wild Encounter for trainer Michelle Lovell.

* Sam Houston plans to conduct a silent auction for the Jockey Crisis Fund during the races Saturday. Before the card starts, there is a free concert featuring country artist Rick Trevino.