Career
Junior
In the 2009 French Open, he entered the Boys" Singles as an unseeded player. He defeated 9 seed Facundo Argüello in the first round. In the semi finals, he defeated Henri Laaksonen to reach his first ever junior Grand Slam final.
He defeated French player and 11 seed Gianni Mina 6–1, 3–6, 6–3 for his first ever junior Grand Slam title.
In the junior 2009 Wimbledon Championships, Berta lost in the third round to American Alexander Domijan 3–6, 3–6. Association of Tennis Professionals
He was granted a wildcard into the 2009 Ordina Open, which was his Association of Tennis Professionals tournament debut.
He lost to Belgian qualifier Dick Norman in the first round, 3–6, 3–6. He also received a wildcard into the 2009 Swedish Open, where he lost to Björn Phau in the first round 3–6, 2–6.