Heather Watson's hopes of playing in the French Open suffered a blow with a first-round defeat by Anett Kontaveit at the Ladies Open Biel Bienne in Switzerland.

The British number two was on the back foot throughout and lost 7-6 (7/2) 6-2 to her Estonian opponent in an hour and 32 minutes.

It was Watson's last chance to earn ranking points before the cut-off for the year's second grand slam in Paris next month.

The 24-year-old has slipped outside the top 100 and, with only 108 players earning direct entry into Roland Garros, Watson is likely to have to go through qualifying.

A good week in Monterrey last week, where she reached the quarter-finals, saw her climb to 110th but this was a missed opportunity against a player ranked only 11 places higher.

Next week Watson is due to represent Great Britain in their Fed Cup World Group II play-off against Romania in Constanta.