Serena Williams into Wimbledon quarter-finals with win over Evgeniya Rodina

Seven-time champion Serena Williams reached the Wimbledon quarter-finals with a straightforward win over Russian qualifier Evgeniya Rodina.

In what was a rare meeting between mothers at this stage of a Grand Slam tournament, Williams was in control throughout a 6-2 6-2 victory.

Rodina, whose left thigh and right knee were taped, often moved slowly and could not deal with Williams' power.

The American, 36, faces Italian world number 52 Camila Giorgi next.

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'The seas have parted for Serena'

With none of the top 10 women's seeds left in the draw, Williams is becoming an ever stronger favourite to win a 24th Grand Slam title and her first since giving birth last September.

Some may argue she has yet to face a stiff test here - she has beaten players ranked 105th, 135th, 62nd and now 120th in the world - but they cannot argue with the fact she only returned to competitive singles tennis in March and has now reached another Grand Slam quarter-final.

Nine-time Wimbledon champion and BBC pundit Martina Navratilova said: "She's been healthy here, hitting the ball hard and the seas have parted for her."

Williams delivered 30 winners - compared to only five from Rodina - and 10 aces, breaking early in both sets.

There was still the odd sign of rustiness - she sent a simple forehand smash into the net in the seventh game of the first set and at times was unable to deal with Rodina's soft serves - but she marched through the match in only 62 minutes and has yet to drop a set at this year's Wimbledon.

Rodina, who had earned £54,000 in prize money this year, quadrupled her total with the £163,000 she takes home for reaching the fourth round.

By reaching the quarter-finals, Williams will return to the world's top 100 when the rankings are released next Monday and could make the top 20 if she wins the title.

She is currently ranked 181 in the world but has been seeded 25th by the All England Club.

A mothers' meeting

Serena Williams said her match against fellow mother Evgeniya Rodina "shows you can still be mom and play tennis"

Only three mothers have won Grand Slam titles in the Open era - Belgium's Kim Clijsters and Australians Evonne Goolagong Cawley and Margaret Court - but Williams is showing strong evidence that she can become the fourth.

She was delighted that meeting Rodina on Centre Court was showing that "you can still be a mom and play tennis".

But as 29-year-old Rodina moved slowly from one side of the court to the other between points, offering little in terms of attack - aside from a break in the fifth game of the second set - it was clear that while they shared the bond of motherhood, their games were worlds apart.

Williams broke in the second game of the match, then roared loudly when she saved a break point in the seventh before a double fault from Rodina handed her the first set.

The second followed a similar pattern with Williams taking a 3-1 lead. Rodina converted the only other break point she had in the match before immediately dropping her own serve.

Williams wrapped up the match when Rodina, who had come through three qualifying matches to reach the main draw, sent a backhand wide.

Asked if it had been a flawless display, former world number one Williams said: "I'm a perfectionist. I always find something. Today was tougher than the scoreline suggested."