The green flag drops on the 2023 Ambetter Health 400 on Sunday at Atlanta Motor Speedway. This will be the third race since the track was repaved, and the new surface on the 1.5-mile quad-oval made for superspeedway conditions in both races last season. William Byron won the spring race last year and comes in off consecutive victories at Las Vegas and Phoenix.

The race is scheduled for 3 p.m. ET. Byron is the 9-1 favorite in the latest 2023 Ambetter Health 400 odds at Caesars Sportsbook, with Kyle Larson and Kyle Busch right behind at 10-1. They are followed by Ross Chastain (11-1), Joey Logano (11-1), Christopher Bell (12-1), Denny Hamlin (12-1) and Ryan Blaney (12-1) in the 2023 NASCAR at Atlanta field.  

Before you lock in any 2023 Ambetter Health 400 picks, you NEED to see what SportsLine's Micah Roberts has to say. A former Vegas bookmaker, Roberts was the first to offer expanded NASCAR betting and now hands out NASCAR winners to his followers on SportsLine.

Roberts is the nation's premier NASCAR betting expert, and his top pick, Chase Elliott, won the YellaWood 500 last October at 12-1 odds. He also correctly predicted Elliott to win the Jockey Made in America 250 in 2021, nailed the 2021 Coca-Cola 600 winner by hitting Larson's victory at 11-2 odds and was on point by targeting Elliott as the winner of the EchoPark Texas Grand Prix at 8-5 odds the previous week. Anyone who has followed his picks has cashed ticket after ticket.

Now, Roberts has analyzed the field for Sunday's Ambetter Health 400. We can tell you he's strongly fading Larson, even though the former Cup Series champ is right at the top of the odds board! The expert says the conditions aren't ideal for Larson, who "needs lots of room and open spaces" and has never won a superspeedway race. In fact, Larson barely cracks the top 20 in Roberts' rankings!

However, Roberts is planning to bet on one driver to win who comes in at well over 50-1! This overlooked driver has led laps at Atlanta and found his groove the second time around last year. He could pull off a STUNNING victory Sunday, and anyone who backs him could hit BIG! You ABSOLUTELY need to see who it is before making any picks.

So who wins the 2023 Ambetter Health 400 at Atlanta Motor Speedway? And which long shot is a MUST-BACK? ... Join SportsLine right now to see the full projected leaderboard for the 2023 Ambetter Health 400, all from the nation's premier NASCAR betting expert!