LONDON -- Miss any action from Super Monday? Fear not. Here is a recap of the best day of the tennis, including match breakdowns and video highlights.
No. 20 Garbine Muguruza def. No. 5 Caroline Wozniacki, 6-4, 6-4
Kamakshi Tandon: The 21-year-old from Spain was the more assertive player on Court 2, winning a match that contrasted her power hitting with Wozniacki's tenacious counterpunching. A tightly contested first set saw Muguruza break at 4-3 as Wozniacki sailed a forehand long. In the second set, it was Muguruza who was applying more pressure in her return game, particularly off her opponent's second delivery.
As in the third round, Wozniacki was watched by skier Lindsey Vonn in the player's box, but the extra encouragement had limited effect, as she lost for the fifth time in the fourth round.
"I've won Eastbourne on grass and done well there so many times," she said entering Monday's match. "I won junior Wimbledon. There is no reason why I shouldn't be able to make it past the fourth round."
That's something Wozniacki will have to keep pondering.
No. 23 Victoria Azarenka (23) def. No. 30 Belinda Bencic, 6-2, 6-3
Howard Bryant: The most telling part of the women's draw entering the fourth round was the difference in accomplishments between the top and bottom halves.
With Serena Williams (20), Venus Williams (7), Maria Sharapova (5) and Victoria Azarenka (2), the top half accounted for a combined 34 Grand Slam titles.
The bottom half? Zero.
That meant for some potential blockbuster matchups later in the tournament. Azarenka's easy dispatching of 18-year-old Bencic means Serena and Azarenka will meet in the quarterfinals. Serena leads the head-to-head 16-3, and when they last met on grass, in the semis of the 2012 Olympics here, Williams rolled 6-1, 6-2.
Five of Serena and Azarenka's past seven meetings have gone three sets, and Azarenka is the only player who consistently stands up to Williams and pushes her to the brink. But Azarenka hasn't beaten Williams since the 2013 Cincinnati final, where she won a third-set tiebreaker.
The popcorn match awaits.
No. 15 Timea Bacsinszky def. Monica Niculescu, 1-6, 7-5, 6-2
Greg Garber: These two have a history that goes back eight years, when they met in an International Tennis Federation event in Latina, Italy. Niculescu won that match on clay and entered Monday's match with a 4-1 record against the 26-year-old Swiss player.
When the Romanian ran off with the first set, it looked like more of the same. But Bacsinszky is a very different player these days. She won 13 of the last 20 games to advance and will face Muguruza next.
All Bacsinszky has done this year is win 36 matches (against only seven defeats) and two titles (in back-to-back events in Mexico this winter). At Roland Garros, she sprinted into the semifinals, beating Madison Keys and Petra Kvitova on her way to her best Slam effort before losing to Serena Williams. After Monday's win, Bacsinszky buried her face in a towel and cried. Her previous best effort here was a trio of second-round departures. Now, she has a legitimate chance to reach a second straight semifinal, and even a career-first final.
No. 13 Agnieszka Radwanska def. No. 28 Jelena Jankovic, 7-5, 6-4
Peter Bodo: This was a compelling battle between two tricky, versatile players. The word "coy" comes to mind. It's hardly surprising the first set lasted more than an hour and featured a dazzling array of chips, dinks, slices and lobs. This, along with the familiar, crisp Jankovic two-handed backhands and sprinting Radwanska retrieves.
Jankovic, who had the second-most aces in the women's draw after three rounds, tried to ratchet up the pace and hit through Radwanska in the second set. But the 26-year-old Pole's defenses held fast and opened Jankovic up to an unsuccessful counterattack that yielded a break in the fifth game.
Radwanska consolidated with a hold for 4-2. Jankovic regrouped and broke back. But at 4-all, she had one of those lapses that has been so costly throughout her career. She played a loose game and was broken again, after which Radwanska served it out without any further drama, winning it after an hour and 42 minutes.
No. 4 Maria Sharapova def. Zarina Diyas, 6-4, 6-4
Matt Wilansky: As a burgeoning teenager, Sharapova kick-started her Grand Slam-winning career with a stunning victory against Serena Williams in the 2004 Wimbledon final. At the time, Sharapova seemed like a perennial grass-court winner with her powerful, laser-sharp groundstrokes. But as time wore on, Sharapova struggled at the All England Club, reaching only one final in the past decade.
Instead, the Russian star became somewhat of a clay-court stalwart, a surface she once decried because of her inability to find her footing. Sharapova went on to win two French Open titles, the only major she has won more than once. But with the attention squarely on world No. 1 Williams, Sharapova has played stress-free, stellar tennis this past week -- she hasn't lost a set through and has dropped just 23 games.
Sharapova will next play American Coco Vandeweghe in Tuesday's quarterfinals.
No. 1 Serena Williams def. No. 16 Venus Williams, 6-4, 6-3
Greg Garber: Sisters Venus and Serena Williams, both five-time Wimbledon champions, met for the 26th time Monday and, true to form, it was a rather routine Serena win. Afterward, Venus, ever the nurturing older sister, wrapped her arms around Serena at the net and congratulated her. Serena has now won 15 of their 26 matches and, more importantly, eight out of 13 in Grand Slam play.
"It's hard to feel excited about [beating] someone you root for and love and is your best friend in the world," Serena said afterward. "She was playing really well, but I came through in the end."
This was an impressive run by Venus, who was the oldest player to advance to the fourth round at a Grand Slam in 21 years, going back to Martina Navratilova here at Wimbledon. At 35 and 33, respectively, Venus and Serena were the oldest women left in the draw.
"I just took the moment in," Serena said. "I thought, 'Wow, I'm 33 and she just turned 35.' I don't know how many more moments like this we'll have.When we were 8 years old, we dreamed of playing at Wimbledon. It was kind of surreal out there."
Coco Vandeweghe def. No. 6 Lucie Safarova, 7-6 (1), 7-6 (4)
Leo Spall: This was already a breakthrough tournament for Vandeweghe, having made it into Round 3 of a major for the first time in 19 attempts. Vandeweghe has battled her way even deeper into uncharted territory and might be handsomely rewarded for a gritty performance. The next test for this powerful, outspoken 23-year-old will be against Sharapova.
While many may be intimidated by facing the No. 4-ranked player in the world, Vandeweghe's confidence should be sky-high. Safarova was ranked only two places below the Russian on Manic Monday, and Vandeweghe (ranked No. 47) triumphed mostly because of superior mental strength in the two tiebreakers.
"I thought it was one of the worst matches I played in the whole tournament," Vandeweghe said afterward. "I kept calm and cool, and I think that helped."
No. 21 Madison Keys def. Olga Govortsova, 3-6, 6-4, 6-1
Howard Bryant: This one had "bad loss" written all over it, from the tightness in Keys' shots, the anxiety in her face and the groans from her coach, Lindsay Davenport, and the rest of her box after just the first three games. It was a tension only exacerbated when Keys blew a 15-40 game on Govortsova's serve, a chance to erase a 5-1 deficit and remain in the first set.
Keys, however, is heading to the Wimbledon quarterfinals for the first time and will play Radwanska, who reached the final here in 2012. High expectations and pressure hovered over Keys on Monday, as Kvitova's loss opened up the draw to a tantalizing prospect of an all-American Serena Williams-Keys final.
None of this can be much of an asset to the 20-year-old Keys, for whom every step she takes for the rest of the tournament is a new one. The question now is which is her bigger opponent: the pressure or the player on the other side of the net?
No. 1 Novak Djokovic level with No. 14 Kevin Anderson 6-7 (6), 6-7 (6), 6-1, 6-4 (suspended)
Peter Bodo: It was a clear-cut battle between the unstoppable force and the immovable object -- one of most powerful servers in Anderson against one of the greatest returners in defending Wimbledon champ Djokovic.
As you might have predicted, tiebreakers loomed large in this one. In the first-set 'breaker, Anderson recovered from a 3-1 deficit and took advantage of a critical double fault by Djokovic at 6-all to win it 8-6. A tiebreaker decided the second set as well. Anderson also fell behind in that one, 4-0. Once again, the 6-foot-8 South African forged back, chipping away until he reached 5-all. He went on to win it 8-6 after fending off one set point with an ace.
The toll taken on a big server's concentration showed in the next set, as Anderson had a mental letdown. Djokovic rolled to a 6-1 win. Anderson rallied and showed greater resolve in the fourth, but Djokovic, fighting for his competitive life in the fading daylight, managed to close it out 6-4 before the match was suspended because of darkness.
No. 2 Roger Federer def. No. 20 Roberto Bautista Agut, 6-2, 6-2, 6-3
Carl Bialik: Seven-time champion Federer was nearly flawless. In the first set, he hit an inside-out backhand smash winner -- one of the sport's toughest shots -- eliciting a yell from a fan: "You're exceptional, Roger."
He finished the set with a lob winner. He then finished the second set with another lob that seemed to go higher than the Centre Court roof before landing inside his opponent's side of the court. It was, however, gratuitous. Agut's previous shot was out.
The match finished in a mere 86 minutes. The only thing that slowed Federer was a medical timeout by Agut, when he fell midway through the second set. Federer finished with 38 winners and only 12 unforced errors. He won 30 of 40 net points and his serve has yet to be broken in the tournament.
Federer has yet to face a top-10 player in the tournament, and his next opponent, Gilles Simon, will continue that run. Given his weaker opponents, it's hard to gauge exactly what Federer's form is until a potential meeting with Andy Murray on Friday. But it's also hard to imagine Federer could have played much better than he has so far.
No. 12 Gilles Simon def. No. 6 Tomas Berdych, 6-3, 6-3, 6-2
Melissa Isaacson: A fallen spectator delayed the fourth-round match for about 15 minutes after the first set, but it hardly slowed down Simon, who reached his first Wimbledon quarterfinal and equaled his best Grand Slam result.
The two veterans had been expected to put on a more competitive show. But Berdych, who beat Roger Federer and Novak Djokovic en route to the 2010 Wimbledon final, failed to reach his fourth quarterfinals.
Simon, who becomes just the 10th Frenchman to reach Wimbledon's final eight, will face No. 2 Federer in Wednesday's quarters.
No. 9 Marin Cilic def. Denis Kudla, 6-4, 4-6, 6-3, 7-5
Greg Garber: Don't take it personally, fans of American tennis, but Cilic is the ultimate spoiler. Put a United States citizen in front of him, and it's lights out. With Monday's reasonably routine win against the 22-year-old from Arlington, Va., Cilic hasn't lost to an American in more than seven years.
It was Cilic's second win over a United States player this fortnight, going back to a third-round win versus the country's No. 1-ranked player, John Isner, that ended 12-10 in the fifth. Oh, and don't forget he won his first major in America, the US Open in September 2014.
On Wednesday, Cilic faces either No. 1 Novak Djokovic or Kevin Anderson.
No. 3 Andy Murray def. No. 23 Ivo Karlovic, 7-6 (7), 6-4, 5-7, 6-4
Leo Spall: Two line judges may have suffered a few bruises when the frightening high-octane serve of Karlovic hit them, but Murray survived his opponent's potent weapon. Karlovic tallied 29 aces, enough to give Murray a hard time, though the Scot's spirit was never broken.
The world No. 3, who had a 5-0 record against Karlovic heading into the contest, yelled loudly in frustration and celebration throughout the match, regularly telling himself to focus as balls were fired toward him at speeds upward of 130 mph.
Murray's determined demeanor was likely a reflection of his optimism and ambition after his half of the draw opened up after first-week exits by Rafael Nadal and Jo-Wilfried Tsonga. Blocking Murray's route in the quarterfinals is Canadian Vasek Pospisil, against whom Murray has a 3-0 record. However, Murray's regular lobbing of the 6-foot-11 Karlovic was outstanding and the Scot's tailored tactical game plans, consistent serving and impressive groundstrokes make him a strong contender.
No. 4 Stan Wawrinka def. No. 16 David Goffin, 7-6 (3), 7-6 (7), 6-4
Greg Garber: With the top three seeds all in action, most eyes were on Djokovic, Federer and Murray. Well, don't look now but the newly minted French Open champion is hurtling through a major draw again.
Wawrinka won his 11th straight Grand Slam singles match, handling the Belgian in a contentious straight-sets win. This matches Wawrinka's quarterfinal breakthrough a year ago here, after going 9-9 in his first nine years. Goffin was trying to get to his first Grand Slam quarterfinal.
Is Wawrinka flying a little under the radar?
"I'm focused on myself," Wawrinka said. "I'm really happy with what I'm doing. I still have a lot to do if I want to win more matches. It's a great result for me to be to be back in the quarterfinals."
No. 21 Richard Gasquet def. No. 26 Nick Kyrgios, 7-5, 6-1, 6-7 (7), 7-6 (6)
Kurt Streeter: Kyrgios, an Australian dynamo, couldn't quite pull out the kind of stunning comeback he did last year against the French veteran Gasquet when the Aussie rallied from two sets and nine match points down for an upset win, 10-8 in the fifth set.
But he came close.
2015's rematch was full of powerful and creative shot-making from the start, but Gasquet found his groove in the second set, repeatedly smacking backhand winners that kept the crowd gasping and made the 20-year-old Kyrgios increasingly frustrated and slope-shouldered. It looked for a while like the match would be quickly over with little real tension.
But that all changed in the third set. Gasquet held two match points and lost both, the second when Kyrgios rifled a slingshot forehand winner. The Aussie followed with a near repeat of that shot, claiming the set for his own, causing Gasquet to break his racket in anger.
Gasquet won the fourth in another tiebreaker to win the match, reaching the Wimbledon quarterfinals for the first time in eight years. For Kyrgios, it was a painful way to lose a chance to return to the quarterfinals, but the crowd rose to its feet with a loud, sustained ovation for two of the game's most gifted players.
Vasek Pospisil def. No. 22 Viktor Troicki, 4-6, 6-7 (4), 6-4, 6-3, 6-3
Carl Bialik: Either Troicki or Pospisil was going to reach his first Grand Slam quarterfinal on Monday.
After dropping the first two sets, Pospisil dominated the last three sets to fulfill the promise he has shown sporadically in singles and more regularly in doubles. Those doubles skills were evident throughout the match. Pospisil bravely served and volleyed regularly against the man who'd ousted serve-and-volleyer Dustin Brown in the previous round. This time, Troicki was able to hit only five passing-shot winners, while Pospisil hit 14 winners at the net.
Those who got a glimpse of the well-played contest saw Pospisil complete his third five-setter at this tournament.
His maturity paid off in the match's deciding moments. Pospisil came back from 0-30 when serving at three games all in the fifth set with two unreturned serves, then broke Troicki in the next game with three successive forehand winners.
Best of all, Pospisil's doubles partner, Jack Sock, promised on Twitter to do all the running in their next doubles match to help Pospisil rest from all those five-setters.