Check out the live stream for the ATP World Tour Finals match between Juan Martin del Potro and David Ferrer as face each other in the Round-Robin following the Men's Doubles match between Paes-Stepanek vs. Qureshi-. Rojer. 

This matchup features Ferrer, the No. 4 ranked player in the tournament, versus del Potro who is No. 6. 

Ferrer has had a great year winning seven titles and posting a 72-14 record in the year. He won at Auckland to begin the year then went on to win World Tour titles at Acapulco and Buenos Aires, while also winning the 's-Hertogenbosch title.

Ferrer went deep in the Grand Slam title tournaments, but could not escape the semifinals.  He lost the Australian Open in the quarterfinals to Novak Djokovic and was beat again by Djokovic in the U.S. Open Semifinals. At the French Open he lost to Rafael Nadal in the semis. He was bounced from Wimbledon in the quarterfinals by Andy Murray.

His opponent, del Potro, has also had his share of success in the 2012 season. 

Del Potro won four titles this year. He grabbed the win in Marseille over Jo-Wilfried Tsonga, retained the Estoril Open title and grabbed the Swiss Indoors Basel after defeating the former five-time champion Roger Federer. He also won Olympic bronce at the London 2012 Olympics. 

Without a doubt, both players would put great finishing touches on excellent seasons if they were to capture the ATP Championship.

Click here to watch the live streaming action for free onlin between del Potro and Ferrer.