After six straight first round losses on clay courts, many thought the world No 39 would have had enough of playing on the slippery surface that obviously doesn't suit his game, but he still entered the clay court tournament when some say he should have opted to play on grass in Surbiton, England.

And the Thai, known locally as "Ball" and who has not won a single set on clay this season, paid a high price. He lost to Czech Michal Tabara, ranked only 376th in the world, 6-1 6-2.

In 2006 he has been winless in seven clay court matches and to make matters worse, he has bowed out in eight straight first rounds dating back to March's Miami Masters Series.

Next week Paradorn will compete on the more favourable grass courts in the Stella Artois Grass Court Championships in London where he will be joined by Davis Cup team-mates Danai Udomchoke and Sonchat and Sanchai Ratiwatana.

Meanwhile, Thai women's No 1 Tamarine Tanasugarn and Taiwan's Hsieh Su-wei teamed up again and stormed into the doubles quarter-finals of the $25,000 Surbiton Trophy on Monday.

They dropped only one game on the way to defeating wild card entrants Danielle Brown and Elizabeth Thomas 6-0 6-1 in their first round doubles match at the grass court tournament, the first warm-up for Wimbledon, which starts at the end of the month.

They have paired up three times this year and reached round two at the Australian Open, the semi-finals in Pattaya and the quarter-finals in Bangalore. They will play British-Laotian Anne Keothavong and Japan's Akiko Nakamura in the quarter-finals. In the singles, Tamarine is seeded sixth and was scheduled to play South African Natalie Gradin last night.

Meanwhile, third-seed Sunil-Kumar Sipaeya of India dashed the chances of local hope Kittipong Wachiramanowong with an opening round 1-6 6-3 6-3 win in the $10,000 LTAT Bangkok Open ITF Men's Futures 1 event at the Tennis Academy of Asia Centre in Bangkok yesterday.

Sipaeya booked a second round match with American Nathan Thompson, who cruised past Austrian Steven Goh 6-2 6-3.

The exit of Kittipong left Weerapat Doakmaiklee and Kirati Siributwong as the only hopes for Thailand. Both are due to play their second round matches today.