Wimbledon 2012: Djokovic vs. Harrison and Wednesday's Best Matches

If the rain ever stops, Day 3 at Wimbledon will be one you cannot miss.

Roger Federer has already conquered his second-round match versus Fabio Fognini, winning 6-1, 6-3, 6-2, but many of the Wimbledon front-runners are still on tap to play later on Wednesday, weather permitting.

Here's a glimpse at the top-notch matches you can look forward to.

Novak Djokovic vs. Ryan Harrison
Centre Court
Fourth Match

If Djokovic has truly shaken off the first-round nerves that come with defending a Wimbledon title on Centre Court, Harrison could be in for it on Wednesday. Despite some early nerves on Monday, the world No. 1 won his first-round matchup in straight sets, and with that road block cleared, he seems to be even more focused as a date with Harrison looms.

Harrison had a rough start of his own on Monday, dropping the first set to Lu Yen-Hsun but rallying to win the match 4-6, 6-3, 6-4, 6-2. With Djokovic looming in the second round, it marks the sixth time in the last six months Harrison has had to face a top-12-ranked opponent in the first or second round of a tournament, according to the New York Times. Most recently, in the French Open, Harrison bowed out in the first round at the hands of Gilles Simon.

Djokovic won the last time these two faced each other.

Maria Sharapova vs. Tsvetana Pironkova
No. 1 Court
Second Match

Fresh off her French Open win, Sharapova easily took down Anastasia Rodionova 6-2, 6-3, in the first round. The top seed is in the hunt for her first Wimbledon title since 2004, and after finishing as the runner-up last year, she knows exactly what she has to do to win.

It won't be easy against Pironkova, however, who's become the upset queen at Wimbledon. In the past, she's shocked the world by knocking off Venus Williams and Marion Bartoli, so she's unlikely to be as easy an opponent as Sharapova faced in the first round.

Plus, Sharapova knows that as No. 1, she has a target on her back, so she won't get too comfortable. She told The Daily Telegraph's Ray Thomas, "When you're a Grand Slam champion, you're No. 1 in the world, everybody is more hungry across the net to beat you."

Xavier Malisse vs. Gilles Simon
No. 1 Court
Third Match

Simon should be confident heading into his second-round matchup on Wednesday; he's faced Xavier Malisse twice already in his career, and he's won both times, in Hamburg in 2008 and in Metz in 2009.

Though the world No.13's 30-15 record isn't spotless, he made it to the third round at Roland Garros this year, and he should be able to take advantage of his 31-year-old opponent, who's gone 14-15 this year. 

Simon needed just two sets to dispatch Paul-Henri Mathieu in the first round, so he should be rested and ready. Malisse took down Marinko Matosevic in the first round in straight sets, 6-2, 6-2, 7-5.

The farthest Simon has ever made it at Wimbledon was in 2009, when he bowed out in the fourth round at the hands of Juan Carlos Ferrero.