Unseeded Indian Davis Cupper Vishal Uppal caused the first upset in the rain marred $10,000 ITF men's tennis tournament, recording a 6-1, 6-4 first round victory over sixth seed Sunil Kumar Sipaeya in Dehradun on Tuesday.

Dmitry Mazur of Uzbekistan defeated Yew Ming Si of Malaysia 6-2, 6-2 in the only other main draw match to be held at the Doon School complex.

Davis Cupper Harsh Mankad is the top seed in the tournament, which has been subject to nature's fury.

The sun came out in the afternoon but two qualifying round matches are still to be completed.

The seedings (Indian unless specified): 1. Harsh Mankad, 2. Mikhail Elgin (Russia), 3. Qureshi (Pakistan), 4. Vadim Davletshin (Russian), 5. Middelkoop (Netherlands), 6. Sunil Kumar Sipaeya, Vijay Kannan, 8. Aleg Ogorodov (Uzbekistan).