Top thoroughbred racing takes place at Santa Anita Park in Arcadia, Calif., and on Sunday the late Pick 4 begins with Race 8 at 7:12 p.m. ET and ends with Race 11. Before you make any picks, you NEED to know how racing insider and accomplished horseplayer Bob Weir has handicapped the four-race sequence.

Based in Saratoga Springs, N.Y., Weir has been handicapping and following horse racing since reading Andy Beyer's landmark handicapping book "Picking Winners" in the late 1980s. Weir is highly invested in the Beyer Speed Figure, a number assigned to every race run by a horse that measures how fast the horse ran. He uses the figure as the backbone of his handicapping. In fact, thanks to his proficiency with speed figures and top-tier handicapping, he landed one of just eight spots on Beyer's figure-making team in 2017, a position he holds to this day.

Weir's methodology has produced multiple five-figure days. In 2014, he hit a $60,000 Pick 6 at Del Mar. The following year, he nailed a $31,000 Pick 6 at Gulfstream Park. In 2016 and 2017, Weir qualified for the prestigious National Horseplayers Championship in Las Vegas. 

And this year, his first for SportsLine, Weir has been on fire. In January he crushed the Pegasus World Cup, giving out an $8 exacta and a $1 trifecta, winning $757.60. On June 13 Weir hit a $2 superfecta in the Ogden Phipps Stakes that paid a whopping $1,039. He nailed the exacta and trifecta in the Forego Stakes in August for $1,134.50. And he hit the late Pick 4 at Belmont Park on June 18, June 19, June 25, July 2 and July 5 with the June 25 score returning a whopping $2,159.50. Those are just some of his hits this year.

Anyone who has followed Weir this year is WAY UP.

Now, Weir has handicapped the late Pick 4 at Santa Anita for Sunday, made his picks and constructed his tickets.

We can tell you that Weir is high on C Z Rocket, the 8-5 favorite in the Santa Anita Sprint Championship, the opening leg of the Pick 4. "C Z Rocket has developed into one of the top sprinters in the country since being claimed by Peter Miller this spring," Weir tells SportsLine. C Z Rocket is Weir's top pick in the Santa Anita Sprint Championship and a single A horse on his Pick 4 tickets.

In addition, Weir is high on a double-digit long shot on Sunday! Weir says this horse "has been a little unlucky" and could light up the toteboard and spice up the Pick 4. Weir is including this long shot on his tickets, and so should you. You NEED to see Weir's analysis before making any Pick 4 selections.

So which double-digit long shot can win? And how has Weir constructed his Pick 4 tickets? ... Join SportsLine now to get late Pick 4 selections at Santa Anita for Sunday, all from the racing insider who is on fire this year!