Day one of the Barclays ATP World Tour Finals certainly brought us some fantastic tennis as Andy Murray and Tomas Berdych fought for three grueling sets before Murray took the match 3-6, 6-3, 6-4. 

Just a few hours later, No. 1-ranked Novak Djokovic battled past Jo-Wilfried Tsonga 7-6(4), 6-3 in a match highlighted by Djokovic successfully capitalizing on two of his three break-point chances.

On Tuesday, the Swiss Maestro Roger Federer will take on Serbian Janko Tipsarevic in the afternoon session, while the "Little Beast" David Ferrer will clash with the 2009 U.S. Open Champion Juan Martin Del Potro.

Federer vs. Tipsarevic

The last time these two guys stepped on the court together, Federer blew right past Tipsarevic 6-3, 6-2 in the Madrid Masters back in May. While Federer won that match as well as his four others against the Serb, the closest contests have been on hard courts that play similarly to the one set up in London.  

Back in 2008 at the Australian Open, the two battled for five grueling sets before Federer prevailed 6-7(5), 7-6(1), 5-7, 6-1, 10-8 in a four-hour, 27-minute marathon. 

Although TIpsarevic has taken some sets off Federer on hard courts in the past, Federer always thrives off the quick indoor courts in London by overpowering with his serve and forehand, something that Tipsarevic simply doesn't have the tools to handle. 

Prediction: Federer in straight sets

 

Ferrer vs. Del Potro

David Ferrer is commonly known as one of the hardest working, toughest guys on tour. He is going to need every bit energy he has in him to get past the big Argentinian Juan Martin Del Potro on Tuesday Night.

This match is a classic example of a contrast in playing styles as Ferrer is known as a grind-it-out type of player, and Del Potro is known for his lethal power. That lethal power from Del Potro has given him lots of success in the past in London as he reached the Finals of this event in 2009 before falling to Nikolay Davydenko.

With that being said, the "Little Beast" David Ferrer always seems to find a way to grind out victories towards the end of the season with fierce competitiveness and fiery passion. Because of that, I see him finding a way to grind out a long three-set victory.

Prediction: Ferrer in three sets