Novak Djokovic during the 2018 US Open. (AP Photo)

On Sunday, Novak Djokovic and Juan Martin del Potro will be fighting it out in the US Open final. The Serbian is looking for his third US Open title, while Del Potro is hoping to win his second since taking the 2009 US Open.

Del Potro easily got through the semifinals after winning the first two sets against Rafael Nadal before the Spaniard retired. Djokovic is looking for his second Grand Slam  title of the year after winning Wimbledon in July.

Now, let us know who will win the final Grand Slam of the year; one of the best servers or the best returner.