Team Penske driver Ryan Blaney secured his spot for the Championship 4 of the 2023 NASCAR Cup Series playoff season after winning Sunday's Xfinity 500 at the Martinsville Speedway.In one of the most thrilling NASCAR Cup Series Playoff races of the season, Blaney led the final 23 laps and drove his #12 Ford away from Aric Almirola on the final lap to cross the checkered flag in P1.After taking a win in a must-win situation, Ryan Blaney locked up his spot in the Championship 4 at Phoenix Raceway on November 5. He gained 59 points and moved to top position in the points table with 5000 points, three wins and seven top-five finishes.Blaney’s win and results of the Xfinity 500 have sealed the remaining two finalists for the Championship 4 event. Ryan Blaney, Christopher Bell, Kyle Larson and William Byron will compete for the 2023 Championship at Phoenix Raceway next week.Martin Truex Jr., who started on pole, failed to take advantage, finishing P12. He gained 33 points and is 12th in the points table with 2228 points.Defending champion Christopher Bell could not repeat his heroics, finishing P7. He gained just 36 points to occupy the seventh place in the points table with 5000 points.NASCAR points table after 2023 Xfinity 500 at Martinsville SpeedwayHere's the updated list of the NASCAR drivers in the Cup Series standings after Round of 8 of the 2023 NASCAR Cup Series race of the season:Ryan Blaney (P) - 5000Christopher Bell (P) - 5000Kyle Larson (P) - 5000William Byron (P) - 5000Denny Hamlin (P) - 2354Tyler Reddick (P) - 2329Brad Keselowski - 2278Chris Buescher (P) - 2263Ross Chastain - 2242Bubba Wallace - 2242Joey Logano - 2239Martin Truex Jr. (P) - 2228Kyle Busch - 2220Kevin Harvick - 2194Michael McDowell - 2157Ricky Stenhouse Jr. - 2154Chase Elliott (P) - 799Ty Gibbs # - 755Daniel Suarez - 730AJ Allmendinger - 687Alex Bowman - 681Aric Almirola - 651Austin Cindric - 624Ryan Preece - 614Corey LaJoie - 597Justin Haley - 585Erik Jones - 557Todd Gilliland - 547Chase Briscoe - 521Austin Dillon - 520Harrison Burton - 441Ty Dillon - 355Noah Gragson - 199Cody Ware - 65Jenson Button - 45Mike Rockenfeller - 39Travis Pastrana - 26Brodie Kostecki - 15Jimmie Johnson - 12Kimi Raikkonen - 8Jonathan Davenport - 1Watch the NASCAR Cup Series drivers and teams next at the Phoenix Raceway on Nov. 5.