Bonzi broke for 1-0 but Halys seized control with breaks for 2-2 and 4-2, clinching 6-2 after a 7 minute hold for 1-2 saving all three break points.
A gruelling tiebreak decider saw Bonzi and Halys trade holds through 6-6, with Bonzi prevailing in the 8 minute tiebreak after Halys held for 6-5 saving both break points.
Bonzi broke for 2-0 and held for 3-0, then sealed 6-3 despite Halys holding for 2-4 saving both break points in a deuce game.