Before the 2020 season, he qualified for the Korn Ferry Tour. He made much success that year. He finished in second place at the 2020 Mexico Championship. He also finished in second place at the WinCo Foods Portland Open. He qualified for the 2020 U.S. Open. Later in the season he played the 2021 Huntsville Championship at the Ledges in Huntsville, Alabama. He held the 54-hole lead at the tournament. At the end of regulation, he was tied with Billy Kennerly and Mito Pereira. They played a sudden-death playoff. Kennerly bogeyed the second hole of the playoff to eliminate himself. On the third hole – played at the par-5 10th hole – Pereira made birdie. However, Barjon "poured in a 20-footer for the win." It was his 25th event of the year. After three second-place finishes, he had finally won. Later in the year he qualified for the 2021 U.S. Open.