The biggest two days in horse racing takes place this week with the 2023 Breeders' Cup at Santa Anita Park in Arcadia, Calif., and on Saturday the late Pick 4 begins with the Mile at 4:30 p.m. ET and ends with the Classic. Before you make any picks, you NEED to know how Saratoga Springs-based racing insider and Beyer Speed Figure maker Bob Weir has handicapped the sequence.

A member of the Beyer Speed Figure-making team, Weir is a two-time qualifier for the prestigious National Horseplayers Championship in Las Vegas. He has produced multiple five-figure days at the track over the years, including a $60,000 Pick 6 at Del Mar in 2014.

Last year he was red-hot in the Triple Crown prep races, hitting the superfecta in the Blue Grass Stakes for $1,678 and exactas in the Fountain of Youth Stakes and Tampa Bay Derby. He also hit the 19-1 winner of the Man o' War Stakes, the trifecta in the Pegasus World Cup, the superfecta in the Met Mile and multiple Pick 4s.

In April of this year, he hit a Pick 4 at Gulfstream Park for $641, the exacta in the Florida Derby, a Pick 5 at Keeneland and the exacta in the Lexington Stakes. He smashed the trifecta in the Belmont Stakes for $532.96, and later in June he crushed the Pick 4 at Belmont for $555. Those are just some of his scores this year.

For Saturday, Weir has handicapped the late Pick 4 at Santa Anita, made his picks and constructed his tickets.

We can tell you that Weir is high on Mostahdaf, the 5-2 favorite in the Turf, the third leg of the Pick 4. "This John Gosden trainee is 3-for-4 this year, and his European form is just much better than anything the U.S. based horses can offer," Weir told SportsLine. Mostahdaf is Weir's top pick in the Turf and a lone A horse on his Pick 4 tickets.

In addition, Weir is high on a massive double-digit longshot on Saturday. Weir says this longshot is a "tough older horse" and could spice up the Pick 4. Weir is including this longshot on his tickets, and so should you. You NEED to see Weir's analysis before making any Pick 4 selections.

So which double-digit longshot can win? And how has Weir constructed his Pick 4 tickets? ... Join SportsLine now to get Pick 4 selections at the Breeders' Cup for Saturday, all from the racing insider who has produced multiple five-figure days at the track!