World class horse racing take place at Gulfstream Park outside Miami, and on Saturday the late Pick 5 begins with the Hutcheson Stakes at 4:07 p.m. ET and ends with Race 12. Before you make any picks, you NEED to know how racing insider and accomplished horseplayer Bob Weir has handicapped the five-race sequence.

A member of the Beyer Speed Figure-making team who is based in Saratoga Springs, N.Y., 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, the trifecta in the Louisiana Derby 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, including May 14's at Belmont for $1,851.

For Saturday, Weir has handicapped the late Pick 5 at Gulfstream Park, made his picks and constructed his tickets.

We can tell you that Weir is high on Big Invasion, the 5-2 favorite in the Silks Run Stakes, the fourth leg of the Pick 5. "There's little doubt that this is the horse in this race with the brightest future as the majority of his competition are older types who may have already seen their best days," Weir tells SportsLine. Big Invasion is Weir's top pick in the Silks Run Stakes and a single A horse on his Pick 5 tickets.

In addition, Weir's top pick in one of the races is a massive double-digit longshot. Weir says this horse has a "chance at a big number" and could spice up the Pick 5. Weir is including this longshot on his tickets, and so should you. You NEED to see Weir's analysis before making any Pick 5 selections.

So which double-digit longshot can win? And how has Weir constructed his Pick 5 tickets? ... Join SportsLine now to get late Pick 5 selections at Gulfstream Park for Saturday, all from the racing insider who has produced multiple five-figure days at the track!