World class horse racing takes place at Gulfstream Park outside Miami, and on Sunday the late Pick 4 begins with Race 8 at 3:38 p.m. ET and ends with Race 11. 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.

In April of last 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 were just some of his scores from 2023.

For Sunday, Weir has handicapped the late Pick 4 at Gulfstream Park, made his picks and constructed his tickets.

We can tell you that Weir is high on Grayosh, a 5-1 shot in Race 11, the final leg of the Pick 4. "Her closing fractions suggest there is more here," Weir told SportsLine. Grayosh is Weir's top pick in Race 11 and the only A horse from the race on his Pick 4 tickets.

In addition, Weir is high on a double-digit longshot on Sunday. Weir says this longshot faced a "much tougher field" in its last race 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 Gulfstream Park for Sunday, all from the racing insider who has had multiple five-figure days at the track!