Quebec teen Eugenie Bouchard was defeated in three sets in her first round match at the Aegon Classic grass court tournament in Birmingham.
Bouchard of Westmount, Que., lost by scores of 5-7, 6-3, 6-2 to Bojana Jovanovski at the Wimbledon tune-up.
The 19-year-old Bouchard on Monday saw her ranking rise 10 spots to 67th. She was outside the top 100 just two months ago.
Jovanovski, who defeated Caroline Wozniacki at the French Open and rose to 52nd in the rankings, broke Bouchard's serve at 1-1 in the third set and didn't look back.
Melanie Oudin's defence of her Aegon Classic title lasted only 57 minutes Monday, with the American losing 6-3, 6-1 to Croatian qualifier Ajla Tomljanovic in the first round.
The 80th-ranked Oudin struggled in cold and windy conditions in Birmingham, central England, failing to handle the dominant serve of Tomljanovic. The Croat will play top-seeded Kirsten Flipkens.
Tomljanovic says "my serve was a big factor. I felt really comfortable returning and that meant I could go for more on my serve."
Oudin beat Jelena Jankovic in straight sets in last year's final of the grass-court tournament, winning her only WTA title.
Eighth-seeded Maria Joao Koehler, No. 10 Hsieh Su-wei and No. 11 Ayumi Morita were also eliminated in the first round.