Unseeded Rohan Gajjar of India [ Images ] caused the first upset in the CCI-ITF US$15,000 men's Futures tennis tournament when he stunned fifth seed Gerald Melzer of Austria in the first round at the Cricket Club of India in Mumbai [ Images ] on Tuesday.

Gajjar, ranked 539 in the ATP rankings, overcame the 432-ranked Melzer 6-2, 6-2 in an hour to set up a second round clash with qualifier and compatriot Divij Sharan.

Unseeded Kittiphong Wachiramanowong of Thailand caused the second upset when he  beat No. 8 seed Ranjeet Virali-Murugesan of India 6-3, 6-1 in another first round tie.

The other Indians to join Gajjar in the second round are Davis Cup members -- top seed Karan Rastogi [ Images ] and sixth seed Yuki Bhambri [ Images ], Ashutosh Singh and Sunil Kumar Sipaeya.

Rastogi tamed wild card and Pune lad Arjun Khade 6-1, 6-1; Bhambri beat qualifier Kenny Bun of Cambodia 6-1, 6-1; Ashutosh beat Alexander Satschko of Germany [ Images ] 6-4, 3-6, 6-3 and Sipaeya beat compatriot and qualifier Abhijeet Tiwari 6-4, 7-5.

Among the Indians crashing out in the first round were qualifiers Vignesh Peranamallur and Vivek Shokeen and unseeded Vijayant Malik.

Nicolas Reissig of Austria beat Peranamallur 6-4, 6-2, unseeded Gero Kretschmer of Germany beat Vivek Shokeen 7-5, 3-6, 6-1 and Jaan-Frederik Brunken of Germany beat Malik 7-5, 6-4.