WIMBLEDON Date: 22 June - 5 July Coverage: Breakfast previews and regular live updates in BBC local radio sport bulletins plus live coverage BBC One, BBC Two, BBC HD, Red Button, website streaming (UK only) and text commentary, 5 Live, 5 Live Sports Extra, BBC iPlayer Tennis on the BBC
By Phil Maiden
BBC Sport at Wimbledon
O'Brien has only reached the second round at Wimbledon once, in 2007
Katie O'Brien produced a battling performance but was unable to overcome world number 35 Iveta Benesova, slipping to a 6-2 5-7 6-4 defeat.
Benesova broke her East Yorkshire rival's serve early to take the first set but O'Brien hit back to take the second and lead 3-1 in the third.
But, O'Brien could not build on her advantage as Benesova booked her place in the second round.
Cambridgeshire's Georgie Stoop lost 7-6 (7-0) 4-6 6-4 to Vera Zvonareva.
The 21-year-old went out in the first round of her Wimbledon debut in a match that had to be played over two days.
The seventh-seeded Russian had come through a first set tie-break before she was pegged back by the British number five in the second.
But she held her nerve to deny Stoop a place in the second round.
Play was stopped on Monday because of bad light when Stoop had responded to going a set down by winning the next 6-4.
Highlights - Stoop loses crucial break point
The Brit started confidently in Tuesday's third set and, with the score at 30-15 in the fifth game, she rounded off a rally superbly, placing the ball into Zvonareva's far right-hand corner.
But the Russian held firm and, with the score at 4-4, she broke Stoop for the first time in the final set.
Zvonareva went on to win the next two games and secure her second-round place.
O'Brien, 23, and Benesova, 25, had similar records at the All England Club going into this match with them having only reached the second round once each.
The Beverley woman was knocked out in the first round of the French Open.
The British number three had started off strongly, winning her first game to love, but after taking a 40-0 lead in the second, she ended up losing out after a long deuce.
O'Brien went 0-40 down in the next game before fighting back to another deuce but Benesova, looking the calmer of the pair, held out to take an early advantage.
A real baseline battle between the duo continued, with the fourth game being the third in a row to go to deuce.
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