India's Shikha Uberoi paid the price for an erratic display and bowed out of the US $175,000 WTA Sunfeast Open after a straight sets defeat to the Czech Republic's Hana Sromova in the opening round in Kolkata on Tuesday.

The 23-year-old lost 4-6, 3-6 after a 77-minute duel.

Sromova set up a second round clash with Russia's Alla Kudryavtseva, who showed the door to compatriot and eighth seed Anastassia Rodionova earlier in the day.

The other upset was of third seeded Ukrainian Yuliana Fedak, who was stunned 4-6, 2-6 by Italian Alberta Brianti in the day's first match on centre court.

World number 193 Shikha hit some brilliant winners but undid the good work by conceding too many negative points.

In the opening set, the first nine games went with serve. However, Shikha, down on a break point, committed a double-fault and surrendered the game and set to Sromova.

In the second set, Sromova demolished Shikha's serve in the fourth game to pocket the set and match.

The clash between the two Russian girls saw Kudryavtseva winning 1-6, 6-3, 6-3.

In the first set, Rodionova broke Kudryavtseva in the first, fifth and seventh games. Kudryavtseva, however, staged a strong comeback in the second set as she demolished Rodionova in the first game. However, the higher ranked player drew level by breaking Kudryavtseva in the fourth game.

Kudryavtseva upped the ante and took four games on the trot including two service breaks in the seventh and ninth games to win the second set.

The deciding third set saw Rodionova breaking her opponent in the opening game, but Kudryavtseva fought back to claim the next five games, breaking the serve of the seeded player in the second, fourth and sixth games.

Though Rodionova made a desperate bid for a comeback and broke Kudryavtseva in the seventh game, she was unable to stave off defeat.

Rodionova won the eighth game to make the set score 5-3, before Kudryavtseva retained the ninth to move into the second round.