Herbert and Sonego traded breaks throughout a 63 minute set, Herbert breaking for 3-1 and 4-2, Sonego breaking for 2-3 and 3-4, before Sonego held for 5-5 saving both break points in an 8 minute deuce game, then won the tiebreak.
Herbert broke for 4-3 and held for 5-3 saving a break point in a deuce game, then held for 6-4 to take the set despite Sonego's resistance.
Sonego broke for 4-2, Herbert broke back for 3-4, then Sonego broke for 5-3 and held for 6-3 in a 5 minute deuce game to seal the set.