Here's a good bet! Elizabeth Banks is a winner in an elegant autumnal outfit at the Breeders' Cup horse races at Santa Anita

First past the post: Elizabeth Banks enjoyed a day at the races at the Breeders' Cup World Championship at Santa Anita Park  in Arcadia on Saturday

Actor David Arquette, 42, was in the stands for the championship that ends the thoroughbred racing season, sporting a brown trilby,  light brown check jacket, white shirt and and flowery blue and orange tie that matched the daisy in his lapel.

Actress Bo Derek, best known for her role in the film 10, was at the event in a professional capacity as well as to enjoy the day - she serves on the California Horse Racing Board and owns Andalusian horses.

The 56-year-old looked stunning in a straw trilby and an elegant cream trouser suit.

Riding for the fall: The actress rocked a stunning dress with a design of leaves and flowers in autumnal colours

Numbers Game: Elizabeth catches up with Numb3rs star Daviod Krumholtz at the race track

On the right track: Actor David Arquette looked dapper in a brown check suit and plum-coloured titfer

Ten out of ten: Actress Bo Derek looked elegant in a cream suit and straw hat

Others keeping their eyes firmly on the runners included Sliders star Jerry O'Connell and actress Heather Locklear.

Heather, wearing a peach dress and black fascinator hat perched on her blonde hair, was at the races with her ex-husband Richie Sambora. The two have become great friends since their divorce in 2007.

The longtime Bon Jovi lead guitarist played the famous Call to the Post on Friday that started the Breeders' Cup and also rocked out in Songs In The Saddle: The Infield Music Fest that entertained racegoers throughout Saturday.

He's got his eyes on the prize: Sliders star Jerry O'Connell was spotted hanging on to his binoculars

Black beauty: Kristin Chenowith, looking glamorous in a black sparkly top and mini skirt, sang The Best Is Yet to Come before the running of the Breeders' Cup Classic 

Clinching it: Heather Locklear and her ex-husband, Bon Jovie rocker Richie Sambora, got up close and personal at Santa Anita

Stringing his fans along: Richie played as part of the Songs In The Saddle entertainment

Singing the blues: Songbird Toni Braxton, looking cute in a grey dress with a full skirt, entertained racegoers at the Breeders' Cup

Winning streak: Mucho Macho Man, ridden by jockey Gary Stevens, won the $5 million Breeders' Cup Classic, North America's richest thoroughbred racing prize