How to watch NASCAR Cup, Xfinity series races this weekend in Vegas: times, channels

The NASCAR playoffs roll on to Las Vegas this weekend, as both the Cup Series and Xfinity Series are in action.

Kyle Larson put on a dominant show in Charlotte at The Roval and leads three Hendrick Motorsports drivers into the round of eight. It looked like all four would qualify until Alex Bowman's car was disqualified for failing post-race inspection. That put two-time champ Joey Logano back in the mix, although he'll have work ahead in the three-race segment.

The South Point 400 is scheduled for Sunday afternoon at Las Vegas Motor Speedway. NASCAR Cup Series drivers will practice and qualify on Saturday.

Larson closed the playoff's round of 12 last weekend with a win at Charlotte's Roval . It was a satisfying triumph for Larson, who had hoped to complete the Indy 500-Coca-Cola 600 double last May before rain in Charlotte prevented him from turning any NASCAR laps. So Larson dominated on the way to his series-best sixth win on the season. Christopher Bell was second, followed by William Byron, Austin Cindric and Chase Elliott.

Larson leads the playoff standings with Bell right behind. Regular-season champion Tyler Reddick is third and William Byron fourth.

After Las Vegas, the round of eight goes to Homestead-Miami and Martinsville before the final four playoff survivors race for it all in Phoenix next month.

Larson has won three of the past seven Cup Series races at Las Vegas, including the past two — last October and last March.

Here's a link to both the season and postseason standings.

The Xfinity Series' drivers will practice and qualify on Friday night in preparation for Saturday night's Ambetter Health 302.

Sam Mayer won on The Roval at Charlotte Motor Speedway in a controversial overtime finish that allowed Mayer to advance in the Xfinity Series playoffs. It came at the expense of Parker Kligerman, who was denied his first career Xfinity Series victory in regulation by a NASCAR scoring call and eliminated from the playoff field. NASCAR ruled Kligerman did not take the white flag when the caution came out and instead called for the two-lap overtime. Mayer moved past Kligerman to win this event for a second straight year.

Xfinity is down to the round of eight with three more races left at Las Vegas, Homestead-Miami and Martinsville to determine the championship four. Justin Allgaier leads the series by seven points over defending champion Custer. Austin Hill and Chandler Smith also head into the round of eight among the top four.

Those racers looking to move up are Mayer, Jesse Love, AJ Allmendinger and Sammy Smith. Hill, Mayer and Shane van Gisbergen have three victories apiece to lead the series.

Here's a link to both the season and postseason standings.

Friday's weather, while sunny, looks to be breezy with gusts over 30 mph. But the weekend looks sensational, with clear skies and daytime highs in the mid-70s and lows in the 50s, according to the National Weather Service.

Here's the TV schedule for both series this weekend:

NASCAR SERIES

South Point 400

XFINITY SERIES

Ambetter Health 302