This was a quarterfinals match between two former champions—del Potro in 2009 and Djokovic in 2011. Djokovic's incredible streak of Grand Slam semifinals is second only to all-time record holder and current world No. 1 Roger Federer.
The win sends Djokovic into the U.S. Open finals for a sixth consecutive year. He is now two matches away from winning back-to-back U.S. Open titles and his second Grand Slam of this year.
Already viewed as one of the best hard-court players of all time, adding the U.S. Open title to his Australian Open title earlier in the year would help his case.
What could have been an epic match ended up being somewhat one-sided. Djokovic easily handled del Potro, winning in straight sets 6-2, 7-6, 6-4.
Current world No. 1 Roger Federer is not still alive on the other side of the U.S. Open bracket. A Federer vs. Djokovic rematch was a match that many people would have loved to see around the world. It is also one that would have had a lot of bearing toward who will have the No. 1 ranking at year's end.
For now, Djokovic is victorious and moves safely into the semifinals.