Britain's Heather Watson made a disappointing return to the WTA Tour as she lost in the first round of the Dubai Tennis Championships.

Watson suffered a 6-4 7-5 straight sets defeat against world number 132 Kateryna Kozlova of Ukraine.

The world number 43 was broken four times in the match, with her 20-year-old opponent wrapping up victory in an hour and 37 minutes.

Watson lost in the first round of her last event, the Australian Open. (BBC Sports)