Heather Watson won her first round match at the Australian Open
British No 1 Heather Watson had to come from a set down before winning her first round match at the Australian Open.
Last Updated: 14/01/13 5:55pm
Watson dropped the first set against the Romanian and quickly found herself a break down in the second, before winning five games in succession to level the match.
Despite appearing to struggle with the heat the 20-year-old from Guernsey dominated the decider to win through in a marathon two hours and 19 minutes.
Watson came off second best in the blustery conditions for the first set and a half but after both players took treatment during a lengthy stoppage the Briton turned things round.
Cadantu, ranked 91st in the world, claimed three breaks of serve to land the first set as errors flew from her opponent's racquet.
At 3-1 down in the second the outlook was bleak for Watson but after treatment for an unspecified problem at the same time that Cadantu called for the doctor, it was one-way traffic.
Cadantu won just four points in the next four games as Watson levelled the match in emphatic fashion.
The largely British crowd sensed Watson was gaining the upper hand and they were proved correct when she ran through the decider, displaying far greater control on her ground strokes to advance.
She will face Ksenia Pervak of Kazhakstan in round two after the world number 82 defeated Mona Barthel 7-5 2-6 6-4.