2025-26 Round 4

Deckertring Grand Prix - Deckertring - Theresa, WI

October 9, 2025

Round 4 of 17

Deckertring Grand Prix Fast Facts

Race date: Thursday, Oct 9

Track: Deckertring, a 4-mile, 11-turn natural terrain (clockwise) road course, Theresa, WI

Race distance:  20 minutes

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IndySlotCar Website: indyslotcar.com

2024 race winner: John Wiedemann (No. 11 FAST Honda-Daboiler)

2024 Firestone P1 Award winner: Bill Black (No. 7 CBD Racing Chevrolet-Daboiler)

One-lap qualifying record: Mark Walczak, 4.500 seconds, 2009

Race record: Mike Fitzlaff, 233 laps, 2015

IndySlotCar Channel telecast: IndySlotCar Channel

At-track schedule (all times local):

6:00 – Gates open

6:30 – Driver introductions

7:00 – Drivers meeting/ Chassis distribution

7:05 – IndySlotCar Series Practice (5 minutes, each group)

7:30 – Qualifying for the Firestone P1 Award (group qualifying/ fastest single lap)

7:55 – Heat races (10 minutes)

8:30 – Deckertring Grand Prix (20 minutes)

IndySlotCar Series Notes:

• Joe Heitz is the most recent winner on the IndySlotCar Series schedule, taking the win at The Road Course at Badger Raceway, the third different winner in the first three events.

• Matt Hayek holds the lead in the Husarsbilt Cup championship after having made the finals in the first three races, however, the #15 FAST II: The Castaways driver will miss the Deckertring.

• Mike Lack is the only other driver that has appeared in all three finals, sitting 17 points behind Hayek.

• John Wiedemann enters the Deckertring Grand Prix as the defending race winner, the defending Husarsbilt Cup champion has only made one final in the opening races.

• STATS WATCH: Heitz’s win at the Fall Brawl moves him to 12the on the all-time list with 16 victories; Matt Hayek’s third straight final four appearance moves him to 11th on the Finals list with 74. Joe Heitz’s 85th start moves him to a tie for 24th with Chad Sorce, Brad Core passes Andy Spehert on the all-time Starts list to 26th with 71 and James Spehert pulls equal with Arnie Lueders with 22 starts at 32nd. Pete Dorn’s DNF at the Fall Brawl is the 17th of his career which ties him with Chris Spehert for 21st.

DECKERTRING HISTORY (16 events, 2007 – 2017, 2023 – present)

Date Race Winner Event Name Location

3/1/2007 Mark Walczak Deckertring Grand Prix West Allis

3/13/2008 Ev Kamikawa Deckertring Grand Prix West Allis

3/5/2009 Mark Walczak Deckertring Grand Prix West Allis

3/18/2010 Mark Walczak Deckertring Grand Prix West Allis

3/17/2011 Mike Lack Deckertring Grand Prix West Allis

9/22/2011 Mark Walczak John Shea Memorial Deckertring Grand Prix West Allis

3/1/2012 Mike Lack Outpost Natural Foods Grand Prix Waukesha

2/14/2013 John Wiedemann Deckertring Grand Prix Waukesha

1/30/2014 Dan Margetta Deckertring Grand Prix Waukesha

2/5/2015 Mike Fitzlaff Deckertring Grand Prix Waukesha

2/4/2016 Mike Lack Deckertring Grand Prix Waukesha

1/26/2017 Matt Hayek Deckertring Grand Prix Waukesha

9/17/2017 John Wiedemann Deckertring Grand Prix Waukesha

2/2/2023 Joe Heitz Deckertring Grand Prix Theresa

3/14/2024 Joe Heitz Deckertring Grand Prix Theresa

10/10/2024 John Wiedemann Deckertring Grand Prix Theresa

Most Wins: 4-Mark Walczak; 3-John Wiedemann, Mike Lack; 2-Joe Heitz