Xfinity Series Baca made his Xfinity Series debut at
Watkins Glen, driving the No. 40 car for
MBM Motorsports in a partnership with
NextGen Motorsports. He started 35th and finished 31st in his Xfinity Series debut. He competed in the next race at Watkins Glen. This time, he drove the No. 13 car, also for
MBM Motorsports in a partnership with NextGen Motorsports. He started 29th, and finished 18th, improving greatly on his previous result. On January 22, 2018, it was announced that Baca would be racing for
NextGen Motorsports part-time along with
Marcos Gomes and
Landon Huffman. However, this did not transpire due to a lack of sponsorship and the team encountering financial problems. NextGen would not field their Xfinity team and only compete in the Truck and K&N East Series that year. In February 2025, it was announced that Baca was selected to be the lead stock car driver for the Commescope Telcel team in the 2025 NASCAR Mexico Series season. This marked the return of Baca to the Telmex-Telcel Racing team full-time after eight years. ==Motorsports career results==