The Williams sisters, Serena and Venus, recorded contrasting results in their respective third round clashes at the ongoing Wimbledon Open tournament.

Former world number one Serena Williams was in no mood for charity as she defeated Kristina Mladenovic 7-5 7-6 (7-2) to secure a round of 16 spot.

Serena Williams has now won 17 successive matches at SW19.

She will face fellow mum and world number 120, Evgeniya Rodina of Russia in the 4th round.

Rodina stunned 10th seed American Madison Keys 7-5 5-7 6-4 to secure her place in the last 16.

Speaking after her victory, the 23-time Grand Slam champion said: “Just getting to the round of 16 twice is not bad. Hopefully I can do a little bit better.”

“I don’t have anything to lose. I have absolutely nothing to prove.” She added.

On the several upsets recorded in this year’s tournament, The 36-year-old American said: “I think a lot of the top players are losing, but they’re losing to girls that are playing outstanding.”

“I think, if anything, it shows me every moment that I can’t underestimate any of these ladies. They are just going out there swinging and playing for broke.” She concluded.

On the other hand, Venus Williams was the biggest casualty of day 5 after she was knocked out by Kiki Bertens of the Netherlands in three sets.

The 38-year-old was beaten 6-2 6-7 (5-7) 8-6 by the Dutchwoman.

On her victory, 26-year-old Bertens said: “It means a lot, I cannot really believe it. It was a tough match, a big fight but I am so happy I won this one.”

“I will have a little celebration, rest a little, but I can celebrate a little because I am in the second week of Wimbledon.” She concluded.