All NASCAR Cup track activities on Saturday (May 27) were postponed due to the persistent rain surrounding Charlotte Motor Speedway, including qualifying for the Coca-Cola 600 on Sunday (May 28).FOX: NASCAR@NASCARONFOXThe rain wins today. The NASCAR Xfinity Series race has been postponed until 12p ET Monday on FS1. NASCAR Cup Series practice and qualifying has also been canceled.38283The rain wins today. The NASCAR Xfinity Series race has been postponed until 12p ET Monday on FS1. NASCAR Cup Series practice and qualifying has also been canceled. https://t.co/ucS30SStzQAround 3:45 p.m. ET, NASCAR officials stopped all track activities while still attempting to start Saturday's Xfinity Series race. As there was no qualifying, NASCAR's performance measure was used to determine the starting lineup for Sunday night's 600.William Byron, who took first place in the last points-paying race of the series two weeks ago at Darlington, South Carolina, got the lowest metric score and will start on the first row on Sunday.Byron's best result in six career appearances on Charlotte's 1.5-mile oval track is fourth in 2021. After 191 of the 413 laps in the previous race, he crashed and retired.Brad Keselowski, Denny Hamlin, Kyle Busch, and Kevin Harvick will round out the top five, joining Byron on the front row on Sunday night. Chase Elliott, Bubba Wallace, Ryan Blaney, Christopher Bell, and Ricky Stenhouse Jr. round out the top ten starts. The All-Star Race champion from last weekend at North Wilkesboro Speedway, Kyle Larson, will start from the 12th position.At 12:00 ET, the race is set to begin. It will be aired on SiriusXM NASCAR Radio, Performance Racing Network, and FS1 network.NASCAR Xfinity starting lineup for Monday's raceNASCAR Cup Series Coca-Cola 600The Coca-Cola 600 at Charlotte Motor Speedway on Monday marks the start of the NASCAR Cup Series' longest race of the year. NASCAR Xfinity has been postponed due to bad weather and the race will take place on Monday (May 29) at noon E.T.Here is the starting lineup for the Coca-Cola 600 at Charlotte Motor Speedway:1. William Byron, No. 24 Hendrick Motorsports Chevrolet2. Kevin Harvick, No. 4 Stewart-Haas Racing Ford3. Brad Keselowski, No. 6 Roush Fenway Keselowski Racing Ford4. Denny Hamlin, No. 11 Joe Gibbs Racing Toyota5. Kyle Busch, No. 8 Richard Childress Racing Chevrolet6. Chase Elliott, No. 9 Hendrick Motorsports Chevrolet7. Bubba Wallace, No. 23 23XI Racing Toyota8. Ryan Blaney, No. 12 Team Penske Ford9. Christopher Bell, No. 20 Joe Gibbs Racing Toyota10. Ricky Stenhouse Jr., No. 47 JTG Daugherty Racing Chevrolet11. Chris Buescher, No. 17 Roush Fenway Keselowski Racing Ford12. Kyle Larson, No. 5 Hendrick Motorsports Chevrolet13. Harrison Burton, No. 21 Wood Brothers Racing Ford14. Ross Chastain, No. 1 Trackhouse Racing Chevrolet15. Tyler Reddick, No. 45 23XI Racing Toyota16. Justin Haley, No. 31 Kaulig Racing Chevrolet17. Joey Logano, No. 22 Team Penske Ford18. Martin Truex Jr., No. 19 Joe Gibbs Racing Toyota19. Ty Gibbs, No. 54 Joe Gibbs Racing Toyota20. Chase Briscoe, No. 14 Stewart-Haas Racing Ford21. Austin Cindric, No. 2 Team Penske Ford22. Ryan Preece, No. 41 Stewart-Haas Racing Ford23. Aric Almirola, No. 10 Stewart-Haas Racing Ford24. Daniel Suarez, No. 99 Trackhouse Racing Chevrolet25. Corey Lajoie, No. 7 Spire Motorsports Chevrolet26. Erik Jones, No. 43 Legacy Motor Club Chevrolet27. AJ Allmendinger, No. 16 Kaulig Racing Chevrolet28. Noah Gragson, No. 42 Legacy Motor Club Chevrolet29. Zane Smith, No. 38 Front Row Motorsports Ford30. Michael McDowell, No. 34 Front Row Motorsports Ford31. Alex Bowman, No. 48 Hendrick Motorsports Chevrolet32. Ty Dillon, No. 77 Spire Motorsports Chevrolet33. Austin Dillon, No. 3 Richard Childress Racing Chevrolet34. BJ McLeod, No. 78 Live Fast Motorsports Chevrolet35. Todd Gilliland, No. 51 Rick Ware Racing Ford36. JJ Yeley, No. 15 Rick Ware Racing Ford37. Jimmie Johnson, No. 84 Legacy Motor Club Chevrolet