The field of potential winners of the 2019 NASCAR Monster Energy Cup will be reduced from 16 to 12 on Sunday when the NASCAR Playoffs hits Charlotte Motor Speedway's Roval road course for the 2019 Bank of America Roval 400. Martin Truex Jr. -- who has won the first two races of the Playoffs -- leads the standings with 2,141 points. Those on the outside looking in include Alex Bowman (13th, 2,051 points), Clint Bowyer (14th, 2,049), Kurt Busch (15th, 2,039) and Erik Jones (16th, 2,008). Oddsmakers list Truex Jr. as the 11-4 favorite in the latest 2019 Bank of America Roval 400 odds, followed by Kyle Busch (5-1) and four others at 8-1. The green flag drops at 2:30 p.m. ET. With so much at stake and so many drivers capable of winning, check out the Bank of America Roval 400 picks and predictions from Micah Roberts, the legendary Vegas bookmaker who pioneered wagering on racing, before locking in any 2019 Bank of America Roval 400 picks of your own.

Those who have wagered $100 on Roberts' winning pick for each of the NASCAR races in 2019 are up $1,700. In fact, those who put down $50 on Roberts' top-four leaderboard picks are up $2,450 on the year, buoyed by Alex Bowman's big win at Chicago at 30-1 odds -- Roberts had the huge underdog in his top four. One of his top four picks has won five of the last six races, including Hamlin (12-1) at Bristol and Erik Jones (16-1) at Darlington.

Roberts got 2019 off to a blazing start, calling 25-1 long shot Jimmie Johnson's win in the Advance Auto Parts Clash. At the TicketGuardian 500, Roberts nailed Kyle Busch at 4-1 over the heavily favored Kevin Harvick, and at Dover he won with Truex at 8-1. Truex won despite starting at the back of the field.

Roberts' top 20 leaderboard has been on top of it, too. At the TicketGuardian 500, he nailed an eye-popping eight of the top 10. At the Auto Club 400, he got nine of the top 10 correct.

Roberts entered the 2019 NASCAR season after finishing big-time in the black in 2018. Those who wagered $100 on each of his picks last year saw $1,750 in profit. Anyone who's following his picks is up huge year after year. 

Now Roberts has analyzed the field and the odds for Sunday's Bank of America Roval 400 at Charlotte Motor Speedway. He's sharing his winner and top 20 leaderboard over at SportsLine.

We can tell you Roberts is high on Ryan Blaney, who is one of several drivers listed at 20-1. Roberts thinks Blaney finishes in the top five. 

"He won the inaugural Roval race last season thanks to Jimmie Johnson wrecking Truex on the last turn of the last lap when the two were running 1-2 for the win," Roberts told SportsLine. "Should he be 20-to-1 this week? Probably not, but I'm glad he is because I'm on him mostly due to this week's race package, which he's had top-fives with in six of the 10 races. He was third at Sonoma in June and fifth at Watkins Glen."

Roberts knows there aren't much better values than Blaney on the Bank of America Roval 400 odds board.

Roberts is also extremely high on a massive long shot who's desperate for a good finish to advance in the playoffs. He has finished in the top five in three of the last four races using this week's package. Anyone who backs this driver could hit it big.

So who wins the 2019 Bank of America Roval 400? And which long shot stuns NASCAR? Visit SportsLine now to see the NASCAR at Charlotte leaderboard from the nation's premier NASCAR handicapper, and find out.