Watson exits Prague Open

In a match lasting more than three hours, Hercog won a third-set tie-break to claim a 7-5 3-6 7-6 (7-5) win, sealing her place in the second round of the competition.

Watson, who also lost in the first round at the Family Circle Cup last month, will be bitterly disappointed by the manner of her defeat against a player ranked 32 places below her at No 72 in the world rankings.

The 22-year-old was 3-0 up in the final-set tie-break before being broken three times by her Slovenian opponent.

Watson is expected to play at the clay tournaments in Madrid and Rome as she attempts to recapture some form ahead of next month’s French Open.