Christopher Thram (Sanborn) and Jody Rosenboom (Rock Rapids) claimed victories Friday at Jackson Motorplex.
Thram won the Midwest Power Series and Midwest Sprint Touring Series main event as the track hosted the Barb Wieskus Memorial. He became the third different feature winner in three 360 winged sprint car events at the track this season.
Troy Schreurs (Baltic, S.D.) scored a season-best runner-up result with Matt Juhl (Tea, S.D.) placing third, Kaleb Johnson (Sioux Falls) fourth and Thomas Kennedy (Winnipeg, Manitoba) fifth.
Thram opened the night by setting quick time out of the 27 drivers before Skylar Prochaska (Lakefield), Johnson and Chris Martin (Ankeny) each won a heat race. Prochaska later finished ninth in the feature.
Rosenboom held off Trevor Serbus (Olivia) for his third Wyffels Hybrids RaceSaver Sprint Car Series triumph at Jackson Motorplex this season.
Trevor Smith (Sanborn, Iowa) was third with 10th-starting Matt Johnson (St. Peter) fourth and Bill Johnson (St. Peter) fifth.
Heat races were won by Koby Werkmeister (Armour, S.D.) and Matt Johnson.
Brandon Halverson (Jackson) was sixth in his heat and 21st in the feature.
The final event of the season at Jackson Motorplex is Aug. 18-20 when the track hosts the 44th annual AGCO Jackson Nationals.
The World of Outlaws will run all three nights, with RaceSaver Sprint Car Series Thursday and Friday and the Upper Midwest Renegades Sprint Car Series on Saturday.
I-90 Speedway
The Midwest Sprint Touring Series moved on to I-90 Speedway in Hartford, S.D. Saturday.
Brant O’Banion (Parker, S.D.) led all 25 laps for his second of the year with MSTS. He won earlier at Park Jefferson Speedway. It’s his third career with the series.
Thram was second and Sam Henderson (Sioux Falls) third.
Halverson was ninth in the feature after placing third in his heat.
Lee Goos Jr. (Hartford) won the RaceSaver Sprint feature, with Nate Barger (Madison, S.D.) second and Andrew Sullivan (Arnolds Park) third.
Knoxville Raceway
Saturday night feature winners at Knoxville:
410 - Rico Abreu, St. Helena, Calif.
360 - Clint Garner, Sioux Falls