Serena Williams continued her march towards a sixth Wimbledon singles crown as she reached the quarter-finals with a straight sets victory over sister Venus on Centre Court.
The top seed won 6-4 6-3 in 70 minutes, to make it 25 straight victories in Grand Slam tournaments.
The 33-year-old was serving close to her best and, apart from being broken in the fourth game of the opening set, never looked in danger of dropping her service again.
Serena sent down 10 aces to just two from Venus, while also avoiding any double faults. In her final seven service games she conceded just eight points.
Venus, meanwhile, had to save five break points on her own serve otherwise the margin would have been wider.
In the end, Serena’s ability to combine power with accuracy proved too much for the 35-year-old Venus whose most recent Grand Slam title came seven years ago.
The match was a complete contrast to Serena’s three-set victory over Heather Watson on Friday when the British player came within a couple of points of beating the world No 1.
And if the younger sibling can win three more matches this week, she will hold all four Grand Slam titles for the second time in her career.
She previously held the quartet of titles in 2003 and, if she were to win here for a sixth time, it would be her 21st Grand Slam success.
In Wednesday’s quarter-finals, she will face the winner of the match between 18-year-old Swiss star Belinda Bencic (No 30 seed) and two-time Australian Open champion Victoria Azarenka (23).