[3] For 2018, it was announced that Monk would compete in the 2018 Lamborghini Super Trofeo North America – LB Cup driving for Wayne Taylor Racing.

During the second round at Sebring International Raceway, Marcelli suffered a high-speed crash with competitor Mason Filippi's Hyundai Elantra N TCR.

As a result, both drivers switched teams to PF Racing for the rest of the season to drive their No.

[9] Monk would get two podiums at Lime Rock Park and Virginia International Raceway to finish 6th in the standings.

On January 3, 2023, it was announced that Monk would make her debut in the 2023 IMSA SportsCar Championship in the GTD class driving the No.

[11] Monk would leave Gradient Racing at the end of 2024 and join Triarsi Competizione to drive their No.