The Rainbow Pick 6 on Sunday at Gulfstream Park outside Miami is expected to have a pool of more than $5 million and must be paid out, meaning there's a chance to make a huge score. The Pick 6 begins with Race 6 at 3:14 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 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.

And on Saturday, he nailed the Pick 4 at Gulfstream Park for $641.

For Sunday, Weir has handicapped the Rainbow Pick 6 at Gulfstream Park, made his picks and constructed his tickets.

We can tell you that Weir is high on Fly the W, the 2-1 favorite in Race 7, the second leg of the Pick 6. "He has won five of his last six attempts on the surface and meets a field loaded with horses he's recently beaten," Weir tells SportsLine. Fly the W is Weir's top pick in Race 7 and a lone A horse on his Pick 6 tickets.

In addition, Weir is high on a big double-digit longshot on Sunday. Weir says this horse "might be disguised" because of his recent losses but could spice up the Pick 6. Weir is including this longshot on his tickets, and so should you. You NEED to see Weir's analysis before making any Pick 6 selections.

So which double-digit longshot can win? And how has Weir constructed his Pick 6 tickets? ... Join SportsLine now to get Pick 6 selections at Gulfstream Park for Sunday, all from the racing insider who has produced multiple five-figure days at the track and hit the Pick 4 on Saturday for $641!