Parker Retzlaff

Parker Edward Retzlaff (born May 21, 2003) is an American professional stock car racing driver. He competes full-time in the NASCAR Xfinity Series, driving the No. 4 Chevrolet SS for Alpha Prime Racing.

Racing career

Early career

In 2012, at nine years old, Retzlaff competed in the Wisconsin Junior Sprints, where he won the mid-season championship. He competed in the Wisconsin Bandolero Series in 2013, finishing 3rd in points, and winning the championship a year later. He would rank 2nd in state points from 2015 to 2016.

He ran full-time in the ARCA Midwest Tour in 2017, where he ranked 14th in points and ranked 2nd in the Midwest Truck Series asphalt trucks. And for 2018, he finished sixth in the overall standings of the Midwest Truck Series.

ARCA

Retzlaff would sign with Visconti Motorsports for two races in the 2019 NASCAR K&N Pro Series East (now ARCA Menards Series East), driving the No. 74. He would finish 10th at Memphis International Raceway, for his first-ever top 10, and would finish 5th at Gateway Motorsports Park, scoring his first-ever top 5. Retzlaff made his 2019 NASCAR K&N Pro Series West debut, running the race's paired event with the NASCAR K&N Pro Series East, at Gateway Motorsports Park. He finished in 5th.

In 2020, Retzlaff would sign with Cook-Finley Racing full-time, driving in the No. 42. He earned 5 top 10s, and one top 20, finishing 4th in the standings.

Retzlaff would return to Cook-Finley Racing in 2021 but only ran for a partial schedule. He would finish 4th at the Southern National Motorsports Park, making it his best career ARCA Menards Series East finish. Retzlaff made his ARCA Menards Series debut in 2020 for CFR, driving in paired events with the East series. His best finish of the season was 8th at Toledo Speedway. He returned in 2021, driving in the paired East series race at the Milwaukee Mile. He would finish 11th.

In 2023, Retzlaff returned to ARCA competition and drove for Young's Motorsports in the road course races at Portland and Sonoma.

NASCAR Xfinity Series

2022

On December 3, 2021, Retzlaff would sign with RSS Racing for a part-time effort in the 2022 NASCAR Xfinity Series, driving the No. 38. He hopes to have a full-time program in 2023. At the 2022 United Rentals 200, his first start, Retzlaff would qualify an impressive 6th. He quickly fell back after the first restart. A fuel pump issue would end Retzlaff's race on lap 158, finishing 36th. He would score his best career finish at the 2022 ToyotaCare 250, after starting and finishing the race in 10th. On September 15, 2022, it was revealed that Retzlaff and RSS Racing had mutually parted ways. On September 20, it was announced that Retzlaff would drive the No. 02 for Our Motorsports at the Texas fall race.

2023

On January 4, 2023, Jordan Anderson Racing announced that Retzlaff will drive their No. 31 car full-time for the 2023 season. In the season-opener race at Daytona, Retzlaff earned a career-best 4th place finish. Overall, Retzlaff scored no wins, one top five, and seven top tens with an average finish of 17.9 and finished 16th in the standings.

2024

On November 2, 2023, it was announced that Retzlaff will return to JAR for the 2024 season.

Retzlaff scored his and JAR's first career poles at Richmond and at Martinsville.

On November 14, 2024, Retzlaff announced that he would not return to JAR.

2025

On December 18, 2024, it was announced that Retzlaff would move to Alpha Prime Racing, competing in the No. 4 Chevrolet.

NASCAR Camping World Truck Series

On September 26, 2022, it was revealed that Retzlaff would make his NASCAR Camping World Truck Series debut at Talladega Superspeedway, driving the No. 20 for Young's Motorsports.

NASCAR Cup Series

On May 30, 2024, it was originally announced that Retzlaff would make his NASCAR Cup Series debut at Daytona International Speedway in August, driving the No. 62 Chevrolet for Beard Motorsports. However, on August 5, 2024, it was announced that Retzlaff would drive the No. 66 for MBM Motorsports during the Cook Out 400 at Richmond Raceway, as he was required to make a non-superspeedway start before Daytona. Retzlaff started 37th and finished 35th 6 laps down. At the 2024 Coke Zero Sugar 400, Retzlaff scored an impressive seventh-place finish after pushing Harrison Burton to the lead under an overtime finish.

Personal life

Retzlaff currently resides in his hometown of Rhinelander, Wisconsin. He is a fan of NASCAR Cup Series driver Kyle Larson, and enjoys playing basketball, working on race cars, and occasionally racing on his iRacing sim during his free time.

Motorsports career results

Stock car career summary

^† As Retzlaff was a guest driver, he was ineligible for championship points.

NASCAR

(key) (Bold – Pole position awarded by qualifying time. Italics – Pole position earned by points standings or practice time. * – Most laps led.)

Cup Series

Xfinity Series

Camping World Truck Series

^* Season still in progress
¹ Ineligible for series points

ARCA Menards Series

(key) (Bold – Pole position awarded by qualifying time. Italics – Pole position earned by points standings or practice time. * – Most laps led.)