Bega has a career-high singles ranking by the ATP of 259, achieved on 25 July 2016.

Bega has reached 34 career singles finals, consisting of 17 wins and 17 losses, all coming at the ITF Futures level.

Additionally, he has a reached 23 career doubles finals, consisting of 9 wins and 14 losses, all coming at the ITF Futures level.

Bega made his ATP Tour main-draw debut at the 2017 Citi Open after the qualifying rounds by defeating Danny Thomas 7–6(3), 6–3 and João Pedro Sorgi 6–4, 6–4.

He was defeated in the first round by Tunisia's Malek Jaziri in straight sets 7–5, 7–5.