US Open Tennis 2012: Watch Live Stream Online of Djokovic vs. Del Potro, Ferrer vs. Tipsarevic; Prediction, Preview

When and where: Thursday's play at Flushing Meadows is scheduled to get underway at noon ET., with the mixed doubles final. Coverage will be provided by ESPN2, with a live stream available on ESPN3. A free live stream will be available on USOpen.org.

Preview: The US Open is thankfully back on schedule after rain threatened to once again derail the second week of the year's final Grand Slam. Thursday sees the remaining two men's quarterfinals take to the court, with the lineup highlighted by the night match between Juan Martin Del Potro and Novak Djokovic.

Del Potro will have to show his powers of recovery after being involved in an emotional occasion on Wednesday as he overcame a fervent home support on Arthur Ashe stadium to put an end to the career of American Andy Roddick. The Challenge promises to be even more imposing in the last eight, though, as the Argentine takes on the defending champion.

Djokovic had a comparatively easy ride as he took a two-sets lead over Stanislas Wawrinka before the Swiss withdrew in the third set. The second seed has been in dominating form so far at Flushing Meadows and has yet to drop a set, while conceding just 20 games in his four matches.

However, a clash against another former US Open champion promises to be by far his sternest test at this year's event. Djokovic won comfortably the last time the pair met and has a 5-2 winning head-to-head record. Yet Del Potro showed the threat he can pose with a straight-sets win to claim the bronze medal at this summer's Olympics. As Del Potro showed when winning in New York in 2009 if he can play free from the injuries that have blighted his career since that year then his powerful can take the match away from any opponent.

But Djokovic's stunning defense and greater consistency should see him progress after what could be an engaging contest.

In the day's other men's quarterfinal, Djokovic's fellow-Serbian Janko Tipsarevic goes up against David Ferrer. After a solid career, 28-year-old Tipsarevic has established himself in the world's top 10 in the past year and is competing in the last eight at the US Open for the second-straight year.

Up against him, though, is a man who has consistently left every ounce of his body on the court. At the age of 30, the fifth seed is having a phenomenally consistent year and has now become only the second Spaniard in the Open era to reach the last eight of all four Grand Slams in the same season.

Surprisingly the pair have not met in four years, making their limited head-to-head record largely irrelevant given the duo's improvements since then. While Tipsarevic will not be blown off the court like he was by Djokovic here last year, Ferrer's incredible returning and consistency off the ground make him a clear favorite to progress to his second US Open semifinal.