Matches to Watch: Day 7 One of Saturday's matches to watch, the second round doubles match featuring Serena Williams and Venus Williams vs. Maria Kirilenko and Nadia Petrova will be resumed at the beginning of the third set. But before that happens, all 32 singles players remaining in the tournament will be in action as all fourth-round matches are scheduled for this one day, a spoil of riches that makes narrowing the matches to watch down to five a challenge. Ana Ivanovic of Serbia (14) vs. Victoria Azarenka of Belarus (2). Centre Court: As is a somewhat controversial daily All England Club tradition, only one women's match is scheduled for Centre Court daily during the first eight days of the tournament, compared to two men's matches. Because of the Club's desire to give as many top players a chance to play on Centre Court as possible, Azarenka gets the nod ahead of bigger stars remaining in the field like Maria Sharapova, Serena Williams, and Kim Clijsters, as well as the defending champion Petra Kvitova (the last of those two relegated all the way to No. 3 Court). But Azarenka is the highest seed to have not played on Centre Court, so as the second-ranked player and winner of this year's Australian Open she gets the nod. Judging by the unusual number of empty seats at most of her matches, Azarenka is hardly a fan favorite or seen as an especially compelling player, but her popular opponent Ana Ivanovic raises the profile of this match considerably. It's hard to gauge Azarenka's level so far this tournament, given that her three opponents so far have been ranked 78th, 87th, and 178th. The two have a head-to-head of 2-2 in their four previous matches, with Ivanovic winning their lone match not on clay. Ivanovic has the weapons to hit through Azarenka's consistent counter-punching, but Azarenka's big match experience recently far surpasses anything Ivanovic has shown in years. Since winning the 2008 French Open, Ivanovic has failed to reach so much as another Slam quarterfinal in 16 subsequent tries. A win over Azarenka on Centre Court would change that. Marin Cilic of Croatia (16) vs. Andy Murray of Great Britain (4). 1 Court: Fresh off the second-longest match in Wimbledon history (though falling far short of the longest), Marin Cilic moves into a fourth-round encounter against a player who went even later into Saturday night. Cilic's 17-15 fifth set finished before daylight, but Andy Murray needed to break the 11 p.m. curfew to finish his four-set win under the roof against Marcos Baghdatis. For his rule breaking, Murray is demoted from Centre to No. 1 Court for the first time this tournament, which means that his match may be delayed if the expected rains come on Monday. Cilic swept Murray out of the 2009 United States Open in straight sets, the lone Grand Slam at which Murray has been in the top two seeds so far in his career. Murray has been streaky in his last few matches, and Cilic, if he has any energy remaining, has a steady power game that could be enough to make this match more interesting than Murray would like. Kim Clijsters of Belgium (unseeded) vs. Angelique Kerber (8). 3 Court: Kim Clijsters faces a top-10 opponent for the first time since January on Wimbledon's fourth-largest court Monday, taking on the sport's fastest riser in the last 12 months. Kerber, who made the United States Open semifinals last year despite being ranked No. 92 in the world, is not a player Clijsters has ever played or likely has much familiarity. Clijsters has looked increasingly sharp through her first three rounds, and has evolved into a more natural first-strike player than Kerber. If she makes it past Kerber, one of the most dogged fighters on tour, she could next face top-ranked Maria Sharapova in the quarterfinals, a battle of four-time Slam champions. Richard Gasquet of France (18) vs. Florian Mayer of Germany (31). 3 Court: Richard Gasquet beat wild card Jo-Wilfried Tsonga in straight sets in the fourth round of Wimbledon 2007, and eventually reached the semifinals of that tournament. That match may not seem especially relevant at first, but it stands as the only fourth round win at a Slam in the talented Gasquet's career. Gasquet has made the second week of Grand Slams 12 times (including at least twice at each), but he is a meager and improbable 1-11 in fourth-round matches. Only 2 of those 11 losses have come to players outside the top 30, however, so this should represent one of the best chances Gasquet has ever had to reach a Slam quarterfinal. Mayer, a flashy, unconventional player who made it through a section of the draw that was decimated by No. 6 Tomas Berdych's first-round loss, reached his one previous Slam quarterfinal at Wimbledon 2004 as a 21-year old, but this is his first trip to the second week of a Slam since. If Gasquet can't capitalize on this opportunity to make it to the final eight of a Slam, one wonders when he ever can. Brian Baker of the United States (qualifier) vs. Philipp Kohlschreiber of Germany (32). Court 12: "My draw didn't open up," Andy Murray said when asked what effect Rafael Nadal's early exit had on him. Philipp Kohlschreiber's draw opened up. And indeed Kohlschreiber's draw did brighten considerably when his third-round opponent became Lukas Rosol instead of Nadal, allowing Kohlschreiber to move through the third round in straight sets. It would seem to continue to stay open considering he faces a qualifier in the fourth round. But the remarkable comeback of Brian Baker, 27, makes him far more than your average qualifier. With his run through qualifying and into the fourth round, Baker has guaranteed himself a top 80 spot after Wimbledon, a remarkable effort for a player who was out of tennis for six years having had numerous surgeries, a player who hadn't competed at a Grand Slam since 2005. More remarkably still, Baker has pretty much coasted through his first career appearance in Wimbledon's main draw, winning 9 of 10 sets played and two of them 6-0. Kohlschreiber is the first seed he will have faced, but Baker has many times overcome far more difficult challenges than the German, to say the least.