[2] For the 2021 season, Rockwell made his professional debut at Watkins Glen International in the 2021 Michelin Pilot Challenge.

[4] He would contest two other races that season at Virginia International Raceway and Road Atlanta, finishing 8th and 9th respectively.

[5] To begin the 2022 season the Rockwell Autosport Development team partnered with Oldcastle Materials running under the name Belgard & Techniseal Racing, with Rockwell being named as one of the drivers in the 2022 Michelin Pilot Challenge.

[6] The season would prove to be a break out year for Rockwell, grabbing his first podium at Weathertech Raceway Laguna Seca alongside co-driver Denis Dupont.

In late 2022, it was announced Rockwell Autosport Development would be returning to the 2023 Michelin Pilot Challenge with a two car entry.