Court One result: Sharapova 6-4 7-5 Frazier
Action from the women's fourth round, where highly-fancied 13th seed Maria Sharapova overpowers American Amy Frazier in straight sets.
Second set
Sharapova 6-4 7-5 Frazier
Frazier's 11th and 12th double faults of the match give Sharapova match point at 30-40. The umpire intervenes in the rally after a Sharapova shot grazes the line, and the Russian takes the replayed point to win the match.
Sharapova 6-4 6-5 Frazier
Sharapova is under pressure on her serve again, but saves break point with a stunningly brave forehand down the line. And controls her nerves to eventually power through the game.
Sharapova 6-4 5-5 Frazier
Sharapova breaks back straight away - a whipped forehand down the line gives her break point, on which Frazier promptly double faults.
Sharapova 6-4 4-5 Frazier
Suddenly, it's Sharapova who is struck by nerves. A double fault at 30-30, and then a backhand which clips the top of the net and drops on the wrong side gives Frazier the break. The American's knack of getting the ball back early has finally paid dividends.
Sharapova 6-4 4-4 Frazier
Frazier finds a fine serve to Sharapova's forehand at 30-30, and then another good first serve to stand firm.
Sharapova 6-4 4-3 Frazier
Sharapova still looks too strong on her own serve for Frazier. But can she find any consistency on her returns to get the break she needs?
Sharapova 6-4 3-3 Frazier
To her credit, Frazier is not letting Sharapova get away.
Sharapova 6-4 3-2 Frazier
Frazier manages to take Sharapova to deuce, but another rasping forehand gives the Russian the game. She pumps her first and lets out a 'come on' as she walks to her chair.
Sharapova 6-4 2-2 Frazier
Again Frazier holds, but only just. Sharapova is really pushing her hard, and keeping up the noise levels too with impressively consistent squealing every time she fires a fierce groundstroke from the baseline.
Sharapova 6-4 2-1 Frazier
Another emphatic service game from Sharapova, sealing it with a serve of 106mph.
Sharapova 6-4 1-1 Frazier
Frazier finally stops the rot having lost the previous five games. But she is finding it difficult to keep up with Sharapova's relentless pace.
Sharapova 6-4 1-0 Frazier
Sharapova is looking to attack at every opportunity, and starts the second set with a comfortable service game.
First set
Sharapova 6-4 Frazier
Frazier's nerve again falters on her own serve and a double fault hands Sharapova the first set.
Sharapova 5-4 Frazier
Sharapova has certainly shaken off her slow start now, as she breezes through an easy service game to take control of the set.
Sharapova 4-4 Frazier
The first really tight game so far, which Sharapova eventually takes with a couple of super cross-court forehand winners. She looks more in the zone now, and is grunting more noisily now than she was at the start.
Sharapova 3-4 Frazier
Sharapova holds confidently enough, but has yet to really find her range.
Sharapova 2-4 Frazier
Frazier is making Sharapova work hard, and in a game with some fine, long rallies, the American eventually prevails.
Sharapova 2-3 Frazier
A third successive break of serve takes Frazier back in front.
Sharapova 2-2 Frazier
Frazier struggles somewhat as she serves into the sun, three double faults gifting Sharapova an immediate break back.
Sharapova 1-2 Frazier
Frazier's strong, flat forehands start to give Sharapova problems, and the Russian's first double fault hands her opponent the first break.
Sharapova 1-1 Frazier
The American holds confidently enough, but there are signs her serve is likely to come under increasing pressure.
Sharapova 1-0 Frazier
On a sunny Court One, the Russian youngster opens confidently enough, taking the game with a strong forehand winner down the line.