Wimbledon 2015 Results: Winners, Scores, Stats from Wednesday's Singles Bracket

Some of the top contenders were put on notice Wednesday at the start of second-round action at the 2015 Wimbledon Championships, and a handful failed to even make it through the tournament's third day.

Fellow top seeds Novak Djokovic and Serena Williams took care of things on Centre Court without any hesitation, but the same can't be said of a few other notables. No. 5 Kei Nishikori shockingly withdrew from the tournament with a calf injury prior to his match with Santiago Giraldo, joining four other seeded foes among the two draws to fall during Day 3.

So much of what's to come at the All England Club is predicated upon how the early-round fixtures go, as players build momentum and confidence for the later rounds. With that said, take a look at how second-round action unfolded Wednesday.

2015 Wimbledon Scores: Wednesday, July 1

Men's Singles	Score
Women's Singles	Score
No. 1 Novak Djokovic def. Jarkko Nieminen	6-4, 6-2, 6-3
No. 4 Stan Wawrinka def. Victor Estrella Burgos	6-3, 6-4, 7-5
Santiago Giraldo def. No. 5 Kei Nishikori	Walkover
No. 9 Marin Cilic def. Ricardas Berankis	6-3, 4-6, 7-6, 4-6, 7-5
No. 7 Milos Raonic def. Tommy Haas	6-0, 6-2, 6-7, 7-6
No. 11 Grigor Dimitrov def. Steve Johnson	7-6, 6-2, 7-6
No. 14 Kevin Anderson def. Marsel Ilhan	6-7, 7-6, 6-4, 6-4
No. 16 David Goffin def. Liam Broady	7-6, 6-1, 6-1
No. 1 Serena Williams def. Timea Babos	6-4, 6-1
No. 4 Maria Sharapova def. Richel Hogenkamp	6-3, 6-1
No. 16 Venus Williams def. Yulia Putintseva	7-6, 6-4
No. 21 Madison Keys def. Stefanie Voegele	6-7, 6-3, 6-4
Bethanie Mattek-Sands def. No. 7 Ana Ivanovic	6-3, 6-4
No. 22 Samantha Stosur def. Urszula Radwanska	6-3, 6-4
Aleksandra Krunic def. No. 19 Sara Errani	6-3, 6-7, 6-2

Complete scores available at Wimbledon.com

No. 1 Novak Djokovic def. Jarkko Nieminen

Alastair Grant/Associated Press

Djokovic didn't waste much time breezing his way forward to Round 3, dispatching Jarkko Nieminen in three quick sets.

It took Djokovic just one hour and 32 minutes to formulate a 6-4, 6-2, 6-3 victory, a performance that saw him give up just one break-point opportunity. Winning 39 of 50 first-serve points, the top-seeded Serbian was virtually unstoppable.

Although this one was largely about Djokovic's continued form as he chases a Wimbledon repeat, Nieminen's last outing at the esteemed championships also stole the show. Djokovic showed his sportsmanship by recognizing the 33-year-old after the match, as noted by Wimbledon:

Not typically one to dominate the service games with aces, Djokovic dazzled Wednesday with eight aces to just one double-fault. That paved the way to his 95 winners, 30 more than his overmatched opponent.

After taking care of Nieminen in the first round of the French Open just over a month ago, Djokovic posted a repeat performance Wednesday. A noticeably difficult opening two matches of the tournament haven't fazed the top seed, who moves on to face his first seeded foe of the draw in 27th-ranked Bernard Tomic on Friday.

No. 9 Marin Cilic def. Ricardas Berankis

Alastair Grant/Associated Press

Lithuania's Ricardas Berankis put the hopes of an entire nation on his back Wednesday at the 2015 Wimbledon, marking the first time anyone from his country has appeared in a Grand Slam. He made it a memorable outing before coming up just short of history in a five-set defeat to No. 9-ranked Marin Cilic.

In an afternoon flooded with high-quality second-round matches on both sides of the draw, Cilic and Berankis combined for the match of the day. They combined to play a whopping 45 games in their match, along with 14 tiebreaker points in the third set.

Berankis battled back in the fourth set to force a fifth and decisive set but couldn't break Cilic when it mattered most, as Matt Zemek of Bloguin observed:

"

Cilic faced multiple 15-40 situations in the fifth set and was absolutely flawless on each and every break point he faced. Well-earned win.

— Matt Zemek (@mzemek) July 1, 2015"

Unsurprisingly, Cilic was relieved following the victory, via Wimbledon.com's Ron Atkin: “Ricardas played extremely well," he said. "He was hitting the ball well and causing me a lot of trouble.”

In the end, Cilic's power was just too much. He smashed a whopping 28 aces on the match with just five double-faults and won 80 percent of his first-serve points.

Things won't get any easier for Cilic, as he faces a similarly powerful service man in John Isner (No. 17) in the third round Friday.

Bethanie Mattek-Sands def. No. 7 Ana Ivanovic

Kirsty Wigglesworth/Associated Press

An up-and-down 2015 year for Ana Ivanovic continued Wednesday, sputtering out of contention at Wimbledon in a straight-sets defeat to American Bethanie Mattek-Sands in the second round.

From the get-go, Mattek-Sands had the game to seriously frustrate Ivanovic. She smashed 32 winners to Ivanovic's 15 on the match, helping her to take a 6-3 advantage in the first set before holding on in the second set, 6-4.

It marked the second win of Mattek-Sands' career against the top-10 seed, as ESPN Stats & Info noted:

Ivanovic channeled her power on the serve with five aces but practically canceled all of them out with four double-faults as well. She won just six of her 20 second-serve points, executed on one of eight break points and failed to take advantage of any opportunity.

The early defeat could prove beneficial in the long run for Ivanovic, as Sports Illustrated's Courtney Nguyen noted:

Either an early flameout or a deep run was to be expected from Ivanovic, based on her 2015 results. She bowed out in Round 1 at the Australian Open to start her Grand Slam year, only to make it to the French Open semifinal in May—her first Grand Slam semis appearance since 2008.

Sadly for the Serbian, her peaking game didn't translate to the grass courts. As for Mattek-Sands, she's one more victory away from advancing to the fourth round of a Grand Slam for just the third time in her career.