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Who is Yellow Marble Racing?

About Us

Humble Beginnings

Jason Kos

Growing up in Plano, Texas, I was always obsessed with speed
and the Yellow Marble always won the race.

40 Years later and I'm as passionate as ever.
Starting my Racing Career in Spec Porsche Boxsters

2022 Season Results

Track Date Race Position
Sebring 2/5/22 Yellow – Sprint 1 9
Sebring 2/5/22 Yellow – Sprint 2 17
VIR 3/26/22 Black – Sprint 1 13
Road Atlanta 4/9/22 Yellow – Sprint Race 2 13
Road Atlanta 4/10/22 Green Enduro – Enduro 8
Eagles Canyon 5/28/22 Club Race – Sprint 1 17
Eagles Canyon 5/29/22 Club Race – Sprint 2 13
Watkins Glen 6/18/22 Green – Sprint 1 18
Watkins Glen 6/18/22 Green – Sprint 2 13
Watkins Glen 6/19/22 Orange – Enduro 17
Sonoma Raceway 8/27/22 Group 1 – Sprint 1 12
Sonoma Raceway 8/27/22 Group 1 – Sprint 2 8
Sonoma Raceway 8/28/22 Group 1 – Sprint 3 8
Summit Point 9/17/22 Green – Sprint Race 1 6

2023 Season Results

Track Date Race Position
Sebring 2/4/23 Yellow – Sprint 1 9
Sebring 2/4/23 Yellow – Sprint 2 9
Sebring 2/5/23 Enduro – Black 9
VIR 3/25/23 Black – Sprint 2 2
VIR 3/26/23 Yellow – Enduro 2
Road Atlanta 4/15/23 Yellow – Race 1 5
Road Atlanta 4/15/23 Yellow – Race 2 DQ*
Road Atlanta 4/16/23 Orange – Enduro 5
Eagles Canyon 5/27/23 White – Sprint 1 24
Eagles Canyon 5/28/23 White – Sprint 2 11
Eagles Canyon 5/28/23 White – Super Sprint 10
Watkins Glen 6/17/23 Green Group – Sprint 1 12
Watkins Glen 6/17/23 Green Group – Sprint 2 9
Watkins Glen 6/18/23 Orange – Enduro 5
Sonoma Raceway 8/5/23 Club Race – Sprint 1 DNF

2024 Season Results

 

Track Date Race Position
Sonoma Raceway 4/6/2024 Race 1 24
Sonoma Raceway 4/7/2024 Race 2 23
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