Serena Williams vs. Venus Williams: Score and Reaction from 2015 Wimbledon

In the most intriguing match on a packed Monday slate at Wimbledon, world No. 1 Serena Williams defeated her sister, No. 16 Venus Williams, 6-4, 6-3 to advance to the quarterfinals and keep her calendar Grand Slam hopes alive.

With the victory, 33-year-old Serena improved her career record to 15-11 against her 35-year-old sister, and she also firmly cemented herself as the favorite to win the Wimbledon title for a sixth time.

While it was a massive win for Serena's Wimbledon chances, she wasn't in much of a celebratory mood afterward, according to Wimbledon's official Twitter account:

Per Christopher Clarey of the New York Times, she was also reflective regarding her many battles against Venus over the years:

As for Venus, she isn't yet ready to step away from the game that she once dominated for so long, according to Nick McCarvel of USA Today:

Despite the fact that Serena entered the match having won each of the season's first two majors, she acknowledged that her sister was playing more consistently at the All England Club, per Wimbledon on Twitter:

That certainly seemed to be the case, as Venus won each of her first three matches in straight sets, while Serena barely survived a three-set thriller against Great Britain's Heather Watson in the third round.

Even so, the younger Williams sister found a way to raise her performance level Monday, as she came out of the gates firing and never looked back. She took each of the match's first two games at love before Venus was finally able to win her first point in her second service game.

That allowed Venus to go on a run, resulting in her evening the match at 2-2. As Clarey pointed out, both Williams sisters were locked in:

After letting Venus back into it, Serena once again seized control of the opening set. She rebounded from her dropped serve to break Venus for a second time to go up 3-2, and it was all the separation she would need as she took the first set 6-4.

Per BBC Sport, Serena held the advantage in many aspects during the first set, but her dominant serve was the biggest difference:

Despite Serena's immense success at Wimbledon over the years, McCarvel observed that the crowd was urging Venus to make a run:

While the opening set was decidedly in Serena's favor, things were a bit more even in the early part of the second. Both sisters were able to hold each of their first three service games, although Serena threatened to break on more than one occasion.

Venus managed to scratch out some holds with timely shot-making, but Courtney Nguyen of Sports Illustrated made note of how aggressive Serena was on the return:

In the seventh game of the second set, Serena finally broke her sister and took firm control of the match up a set and 4-3 in the second. She followed that up with a hold of her own to push Venus' back against the wall, eventually taking the second 6-3.

Following Serena's win, she shared a warm embrace with Venus at the net before engaging in a subdued celebration.

The Williams sisters have never particularly enjoyed playing against each other. However, they put on a strong show Monday. Serena will now face the winner of the Belinda Bencic vs. Victoria Azarenka match.

If Serena manages to continue playing like she did against Venus, it is difficult to envision anyone preventing her from taking the so-called "Serena Slam," with four Grand Slam titles in a row dating back to last year's U.S. Open.

The 20-time Grand Slam singles titlist is still the woman to beat.

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