World class horse racing takes place at Pimlico Race Course, and on Saturday, there's a Pick 4 that begins with the James W. Murphy Stakes at 4:12 p.m. ET and ends with the Preakness Stakes. Before you make any picks, you NEED to know how racing insider and accomplished horseplayer Bob Weir has handicapped the four-race sequence.

A Saratoga Springs-based racing insider and Beyer Speed Figure maker, 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 on fire. He hit the exacta in the Sam F. Davis Stakes, Tampa Bay Derby and Peter Pan Stakes, the trifecta in the Risen Star Stakes, Blue Grass Stakes and Pennsylvania Derby and the superfecta in the Belmont Stakes.

This year, he has been red-hot in 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 has hit the trifecta in the Pegasus World Cup and multiple Pick 4s, including the May 14 Pick 4 at Belmont for $1,851. Anyone who has followed him is way up.

Now he has handicapped the late Pick 4 at Pimlico for Saturday, made his picks and constructed his tickets.

We can tell you that Weir is high on Carotari, the 9-5 favorite in the Jim McKay Turf Sprint, the third leg of the Pick 4. "Carotari is an excellent turf sprinter who just keeps firing," Weir told SportsLine. Carotari is Weir's top choice in the Jim McKay Turf Sprint and an A-horse on his Pick 4 tickets.

In addition, Weir is high on a double-digit long shot on Saturday! Weir says this horse "could be running late at a good price" and could 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 big 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 Pimlico for Saturday, all from the racing insider who hit the Pick 4 at Belmont last Saturday for $1,851!