The Men's Singles bracket is still looking solid after the first round of action concluded Wednesday evening. The Top 3 players are still alive and looking to clash later in the tournament. However, they have a few rounds before meeting in the later rounds. Here are all the top players and underdogs still alive at the 2013 Men's Singles U.S. Open tournament. 

Novak Djokovic (1) his first round matches are so easy, he has plenty of time to joke around after they are completed. Waiting for match results dictating who he will face is just another one of the quirky, cool things Djokovic does to entertain. He cruised in the first round, dropping only five games to Ricardas Berankis.

Juan Martin del Potro (6) One of the more entertaining matches you will see in the first round of a tournament that did not result in an upset. Del Potro battled against Guillermo Garcia-Lopez in four well-played sets. Okay, so he sort of delayed yesterday's matches, but it was worth it and for fans who waited for the Andy Murray night cap, we got to enjoy three tennis matches.

Andy Murray (3) struggled a bit in the second set, but he must have realized people had to work the next day. He rallied back from an 0-3 deficit, winning six of the last seven games to claim the set and eventually advance to the second round after putting away the unpredictable Michael Llorda. 

Rafael Nadal (2) the man is on cruise control. He had a tough time with Ryan Harrison in the first set, but he eventually took that 6-4. After losing those four games in the opening set, Nadal only lost a total of four games in the remainder of the match, winning the final sets 6-2, 6-2.

Roger Federer (7) is showing his age. Like many men at the age fo 32, Federer had trouble closing out, but he eventually made it through without a problem. He beat Grega Zemlja in straight sets, 6-3, 6-2, 7-5. 

Noticeables: David Ferrer (4) is currently in his second round match. James Blake is one of a few noticeables eliminated from contention. Kei Nishikori, who was ranked No. 11, was bounced in the first round by Daniel Evans in straight sets. After making plenty of noise at Wimbledon, Jerzy Janowicz was eliminated by the Argentine, Maximo Gonzalez. 

Click here for the remainder of the Men's Bracket at the 2013 U.S. Open