The 2023 NASCAR Playoffs will continue with the penultimate race of the season on Sunday. The 2023 Xfinity 500 at Martinsville Speedway is the last race in the Round of 8 and the green flag is scheduled to drop at 2 p.m. ET. Denny Hamlin is the 3-1 favorite in the 2023 NASCAR at Martinsville odds, followed by Kyle Larson at 13-2 and William Byron at 8-1.

Our proven NASCAR projection model has simulated the race 10,000 times and came up with a surprising leaderboard. Developed by daily Fantasy pro and SportsLine predictive data engineer Mike McClure, this proprietary NASCAR prediction model takes into account a slew of factors including track history and recent results.

McClure's model is red-hot in the 2023 season, nailing Martin Truex Jr.'s Clash win (20-1) as well as his win in New Hampshire (11-2), Joey Logano's Duel win (8-1), Kyle Busch's Fontana victory (10-1), Denny Hamlin's triumph in Kansas (6-1) and Kyle Larson's wins at Martinsville (6-1) and the NASCAR All-Star Race (13-2). The model correctly predicted winners in two of the last four weeks as well, with Ryan Blaney scoring a 12-1 payout at Talladega and Larson winning at 9-2 two weeks ago in Las Vegas. It also impressively nailed five of Larson's wins during his historic season in 2021. All told, the model has nailed a whopping 15 winners since 2021! Anyone who followed its lead on those NASCAR picks saw HUGE returns.

Now, the model has dialed in on the 2023 Xfinity 500 and released its projections.

The model knows Martinsville Speedway is one of the most iconic venues on the NASCAR schedule and "The Paperclip" has been a fitting stage for the second-to-last race the last three years. Last year, Ross Chastain famously rode the wall to pass several cars at the start-finish line, including Denny Hamlin, whom he beat out for the final spot in the championship race. The NASCAR Cup Series made its first trip to Martinsville in 1949 and Sunday's race will mark the 150th held at the 0.526-mile oval.

For the 2023 Xfinity 500, we can tell you the model is high on Christopher Bell, even though he's an 18-1 longshot in the latest 2023 NASCAR at Martinsville odds. He's a target for anyone looking for a HUGE payday. And a massive shocker: The model says William Byron, one of the Vegas favorites at 8-1, stumbles big-time and doesn't even crack the top five! There are far better values in the 2023 Xfinity 500 starting lineup.

The model is also targeting two other drivers with 2023 NASCAR at Martinsville odds of 18-1 or higher to make a serious run at the checkered flag! Anyone who backs these drivers could hit it BIG. You ABSOLUTELY need to see who they are before locking in any NASCAR picks.

So who wins the 2023 Xfinity 500, and which EPIC longshots are a MUST-BACK? ... Join SportsLine right now to see the full projected NASCAR at Martinsville leaderboard, all from the model that has already called the winners of nine races in 2023!