The team failed to qualify along with five other cars. Black returned to the Xfinity Series sporadically in summer 2018, with Isokern Fireplaces as his sponsor. In January 2019, it was announced that Black would compete full-time in 2019, driving the No. 07 car for SS-Green Light Racing. Black began the 2020 season by scoring his first career Xfinity top-ten finish, avoiding late crashes to finish eighth at Daytona. Despite enjoying a strong start to the year with an average finish of 18.6 across the first five races, he withdrew from full-time racing in late May to help his sponsor and father's business CDA Technical Institute, which was struggling financially due to the COVID-19 pandemic. In September 2017, Black joined Rick Ware Racing's No. 51 Monster Energy NASCAR Cup Series car at Chicagoland's Tales of the Turtles 400. After qualifying 39th, he finished 40th, 16 laps behind race winner Martin Truex Jr. He made two more starts in the Playoffs, finishing 34th at Texas and 38th at Homestead. On November 22, 2017, Black joined the RWR team for a full 2018 Monster Energy NASCAR Cup Series season and a Rookie of the Year effort. However the deal fell through later in the offseason, as Black's family, which owned reported sponsor ScubaLife, allegedly backed out of the commitment in December. However, he has driven the No. 51 at Daytona in July with a 16th-place finish. Season still in progress