It was a lengthy match despite the two players playing just three sets, ending after three hours and 15 minutes of play. Del Potro broke down in uncontrollable tears on his chair.
After a 2017 season in which Roger Federer and Rafael Nadal left tennis fans blinking in disbelief at their ability to turn back time and own majors as if they were in their 20s, Djokovic closed 2018 with a dominant performance against Juan Martin del Potro to claim his third U.S. Open title - and first since 2015. We all go through our emotions, especially when you're fighting for a Grand Slam trophy.
But in the last eight weeks the 31-year-old has resembled the Grand Slam machine that held all four major titles at the same time in 2016, wining three of his last four events including Wimbledon and U.S. Open.
"Now we can expect him to really challenge to be No. 1 by end of the year", said Djokovic's coach, Marian Vajda.
His extended time away from the game may have denied the 29-year-old del Potro a chance to elbow his way in among the game's "Big Four" of Nadal, Federer, Djokovic, and Andy Murray. He had to endure a dramatic 20-minute service game in which his opponent had three more break points but could not take them.
Del Potro is the next in line to qualify for the 2018 Nitto ATP Finals, which would mark his first appearance at The O2 in London since 2013.
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Del Potro, seeded third, was appearing in the second Grand Slam final of his career nine years after reaching his first.
"You can learn a lot from the past but I want to focus my energy on the present".
But while Djokovic took to public transport, brushed up on his history and joined in with a famous "floss" dance with some local children outside in the rain, women's champion Naomi Osaka showed off her maiden slam title inside a TV studio. "It was very loud and somewhat disruptive of the rhythm for both players at times, and I think the chair ump took that into consideration, and we are very comfortable with how she handled that match".
Djokovic is tied for third with Pete Sampras for the most career Grand Slam singles titles, behind Roger Federer (20) and Rafael Nadal (16).
The third and final set almost followed the same script, as Djokovic again broke del Potro to take a 3-1 lead only for the Argentinian to break back and level the set at 3-3. Of course, I'm sad to lose but I'm happy for Novak as well.
The game went to deuce eight times, del Potro had a break chance three times, he nearly made it as Djokovic committed his first double fault of the match.
On his part, del Potro was let down by his trusty forehand in the big moment and he had no Plan B. He employed his serve and groundstrokes with all the force he could muster, but without a game plan, throwing anything at Djokovic at full speed is as good as a boomerang.