Mother Nature took another bite out of championship weekend for the Summit USMTS National Championship fueled by Casey's on Wednesday with the cancellation of Thursday's inaugural King of the Ring at the Tri-State Speedway in Pocola, Okla.

“With the rain today, the weather forecast holding true and with more rain expected on Thursday, with cold temperatures, the Modster Mash and King of the Ring at Tri-State Speedway has been cancelled,” said the track's media coordinator Rob Nugent. “With drivers and fans coming from all over the country, we wanted to be as proactive as possible.”

Championship weekend—also known as the Modster Mash—was shortened from four races to three yesterday when the Dallas County Speedway canceled Wednesday's event due to excessive rain.

Now, with the Thursday's show being canceled at the popular Tri-State Speedway in Pocola, Okla., the final two races of the 2021 season for the USMTS will take place this Friday and Saturday in the Sunflower State.

On Friday, October 29, the USMTS returns to the Lakeside Speedway in Kansas City, Kan., for the 6th Annual Grant Junghans Memorial presented by Mel Hambelton Ford which currently carries a top prize of $12,002 with a minimum of $1,402 to start the main event.

USRA B-Mod competitors will also be in action with racers battling for valuable Summit USRA Weekly Racing Series national points and $2,222 to win.

Ricky Thornton Jr. is the defending champion of the Grant Junghans Memorial. Other winners include Jacob Bleess (2019), Jake O'Neil (2018), Rodney Sanders (2017) and Lucas Schott (2016). Bleess' win came at the 81 Speedway while the others happened at the Lakeside Speedway.

As it has since the beginning, this year's event will raise money for the Grant Junghans Memorial Fund which supports research and funding for childhood cancer in honor of the late racer from Manhattan, Kan.

For more information check out lakesidespeedway.net.

Then on Saturday, October 30, the crowning of the 2021 USMTS national champion will take place after the checkered flag waves at the 2nd Annual USMTS Modified Spook-tacular at the 81 Speedway in Park City, Kan. The race winner will pocket no less than $10,030.

The Chunky Poodle USRA B-Mods will also be in action racing for $1,031 to win.

Trick-or-treating for the kids will happen from 2-3 p.m. with a free Halloween Walk through the pits. Grandstands open at 3:30, hot laps begin at 5:15 and racing gets underway at 6.

For more information check out 81speedway.com.

If you can't be there in person, each night will be broadcast live at racindirt.tv.

Taking dirt to a new level: The Summit USMTS National Championship fueled by Casey's currently features 33 nights of racing with the winners of those main events set to take home over $300,000 in earnings from more than $1 million in prize money earmarked for the 2021 campaign.

Most main events pay at least $10,000 to win while the others carry a $5,000 top prize or more. And if that weren't enough, more than $200,000 is committed to the top ten finishers in the 2021 points standings with a record $70,000 reserved for the 2021 USMTS national champion.

Visit usmts.com for schedules, points, photos, souvenirs, videos and more. Follow our social media channels on Facebook, Instagram, Twitter and YouTube. Click here to get USMTS news delivered to your inbox.

= = = = = = = = = = = = = = =

USMTS OFFICIAL SPONSORS:  American Racer Racing Tires, Beyea Headers, Casey's, Chevrolet Performance, Compstar, Dirt Draft, Eibach, Fast Shafts, FK Rod Ends, Intercomp, Jerovetz Motorsports Racing Parts, K1 RaceGear by Ryan Bowers Motorsports, KS Engineering, KSE Racing Products, Malvern Bank, Mesilla Valley Transportation, MSD Performance, MTN DEW RISE ENERGY, MyRacePass, Nitroquest Media, PEM Racing Gears & Drivetrain, RacinDirt.com, Summit Racing Equipment, Super Clean, The Chunky Poodle, VP Racing Fuels, Wrisco Industries.

USMTS PARTICIPATING SPONSORS:  ARMI Contractors, Boomtest Well Service, Boubin Tire & Automotive, Brodix Cylinder Heads, Duvall Electric, Hacienda Mechanical, Mel Hambelton Ford Racing, Midwest Wrap Co., Miller Welders, PBM Performance Products, Race Ranch, Rancho Milagro Racing, RHRSwag.com, S&S Fishing & Rental, YouDirt.com.

USMTS CONTINGENCY SPONSORS:  AFCO Racing Products, Allstar Performance, BigDeal Car Care, Brown & Miller Racing Solutions, Bryke Racing, BSB Manufacturing, Champ Pans, Deatherage Opticians, Edelbrock, Forty9 Designs, Hooker Harness, Integra Racing Shocks and Springs, Keyser Manufacturing, Maxima Racing Oils, Penske Racing Shocks, QA1, RacerWebsite.com, Real Racing Wheels, Simpson Performance Products, Swift Springs, Sybesma Graphics, Tire Demon, Wehrs Machine & Racing Products, Wilwood Racing.

USMTS RACETRACKS: 81 Speedway, Ark-La-Tex Speedway, Casino Speedway, Cedar Lake Speedway, Deer Creek Speedway, Fayette County Speedway, Hamilton County Speedway, Humboldt Speedway, Lakeside Speedway, Lucas Oil Speedway, Mason City Motor Speedway, Mississippi Thunder Speedway, Ogilvie Raceway, Park Jefferson Speedway, Rapid Speedway, Revolution Park, RPM Speedway, Tri-State Speedway, Upper Iowa Speedway.