Lets take a look at the talking points from the final day of action at the US Open...

Box office battle

It is the final the seedings summoned with the top two players in the world vying for another slice of history.

Finely poised at 21-20 on head-to-head in favour of Roger Federer, the Swiss was aiming to land an 18th Grand Slam title in his first US Open final since 2009.

The 34-year-old was also fighting to become the first man in the Open era to secure six US Open titles, having won five successive titles in 2004-08.

On the other side of the net stood the imposing figure of world No.1 Novak Djokovic, featuring in a 16th major final in his previous 21 Grand Slams.

The 2011 champion is back in the showpiece for the fifth time in six years having battled to the final of all four Grand Slams this season.

Their last encounter saw Federer prevail in straight sets at Cincinnati but the Serb was the victor in the last major contest during his title triumph at Wimbledon.

The history was staggering, the numerous accolades perch the pair top of the game, their form has been astonishing. The final promised to conclude the Grand Slam season in scintillating style despite the three hour rain delay.

Tale of the tape

The raucous crowd were set for a treat when Federer was forced to save three break points in a six minute opening game. As a contrast, the no.1 seed stormed to hold within a minute.

The Serb snatched the initiative to break for 2-1 with some relentless strokes but Federer responded immediately utilising a ferocious one-two attack.

Having canvassed the net gracefully, Federer then found himself in trouble following a miscued serve and volley. Djokovic sent a backhand missile passing shot down the line to lead 4-3.

The undulations in momentum were fascinating but Federer rued another missed break-back opportunity as Djokovic blasted a forehand winner to edge 5-3 ahead.

Five-time champion Federer fended off set point on serve with a series of punishing rallies enthralling the crowd. However the world No.1 eased to serve out for 6-4 to inflict a first dropped set for the Swiss in the tournament.

Federer sprung the ‘SABR’ on Djokovic and a sublime backhand down the line to earn another trio of break chances but the relentless consistency and velocity from the Serb kept the set on par.

Two back-to-back lobs from Djokovic dipped within the baseline as he managed to contain the freight-train attacking tennis from Federer.

Finely poised at 5-4 Federer, the 34-year-old was cheered on by an ardent crowd determined to inspire him back into the lead. Despite the fans in majority fighting for Federer, the world No.1 fought off two sets points in a mammoth game.

Having held with a delightful drop shot, Federer launched two clattering forehands to establish two set points. A spectacular all-court rally had the crowd on their feet as Federer stole the second set 7-5, leaping into the air with Arthur Ashe stadium in raptures.

Ripping winners, pulsating rallies and stout defence, the tension kept on building but Djokovic’s unwavering resolve would not quiver. The pair were inseparable in the third set until Federer went narrowly wide on a brace of break points at 4-5, being coaxed to hit the lines by the Serb’s mental fortitude.

All of a sudden Federer had relinquished the set 4-6 but the margains were incredibly narrow. At this stage both players had won 112 points each.

Djokovic capitalised on sneaking the third set to grasp the initiative in the fourth to lead 2-0. The Serb elevated his game and was withstanding a bombardment at the net from Federer.

More chances bypassed the 17-time Grand Slam champion but Djokovic was adapting to win the pivotal points. Federer was paying for his missed opportunities and a firecracker forehand return winner sent Djokovic 5-2 up and onto the brink of regaining the trophy.

The celebrations were delayed momentarily because Federer unleashed two huge forehands to break and consequently hold to reduce the arrears to 5-4, but the world No.1 rose to the occasion to serve out or the title, lifting a third Grand Slam trophy in a phenomenal season.

"It's been an incredible season, next to 2011 the best of my life (also won three majors)," said Djokovic. "But I'm enjoying this year more than I did any previous one because I'm a husband and a father, and that makes it sweeter.

“I definitely am very proud of all of the achievements. Winning Grand Slam is very special for any tennis player when you are dreaming of becoming a professional tennis player. When you are kind of finding that inspiration, motivation, these are the tournaments you dream of winning. So to actually relive these moments again after 2011 it's quite incredible.”

Djokovic had won the title previously on one occassion from five brutal finals at Flushing Meadows. The top ranked player is relieved that rate has improved, "Tonight was another match that was decided by few points. That's what happens. Grand Slam finals really are no clear favorites, especially if you're playing against biggest rivals. I can't really find a particular reason why I have not been so successful in the finals here as I am maybe in Melbourne, for example, or Wimbledon. But I'm glad that this tradition of losing in finals is broke now," said the Serb with a beaming smile.

The world No.1 made sure he paid tribute to his opponent. “To win against one of the biggest rivals, all-time Grand Slam champion, somebody that, you know, always keeps on fighting till the last point, keeps making you play an extra shot, yeah, all these things now are very special to me.”

Federer was determined to remain positive, having participated in a first US Open final since 2009.

"There is definitely consolation it's been a great stretch all the way for many months now. Also to receive the crowd support that I did receive. I don't consider that normal. It feels like you're winning, as well, but I felt like I was sort of up in the score, they kept me going, and that's definitely one of the reasons I still keep playing, because of these moments, goose bump moments. It's great," added Federer. "Yeah, surely I am very disappointed. Like you said, I had my chances on my racquet. I should never been down in the score the way I was. But Novak did a great job of fending them off, and, you know, all of that. It was a tough night but thrilling at the same time."

Mental steel

The mental fortitude of champion Novak Djokovic is as impressive as his unbelievable shot making. The top seed had to withstand a rocking Arhur Ashe Stadium predminantly in favour of his opponent, regularly serving whilst being jeered. The 10-time Grand Slam champion has also managed to save an astonishing 43 out of 57 break points in his four major finals in 2015. Winning in Australia he saved 7/12, at Roland Garros the Serb saved 11/15 despite falling to Stan Wawrinka. At Wimbledon the 28-year-old staved off 6/7 break points on route to defeating Federer and at Flushing Meadows on Sunday night Djokovic managed to save 19/23. What a fighter.

Hingis completes a double

Evergreen Martina Hingis has continued her dominant doubles performances in 2015 by winning the women’s title for the first time since 1998 alongside partner Sania Mirza without losing a set. The top seeds ousted Casey Dellacqua and Yaroslava Shvedova, 6-3, 6-3.

"We just clicked from the very beginning and our games compliment each other so well," said Hingis. "Being back here and winning titles is just a bonus for me now."

Hingis and Mirza backed up their Wimbledon triumph at Flushing Meadows but the Swiss also prevailed in the mixed doubles final, landing another Grand Slam title with Leander Paes.

British wheelchair success

Jordanne Whiley survived a topsy-turvy encounter to win her maiden Grand Slam singles title on Sunday.

Whiley, 23, defeated her doubles partner You Kamiji in the women’s wheelchair final 6-4, 0-6, 6-1

Fellow Britain Gordon Reid also enjoyed triumph on Sunday, clinching his second Grand Slam title paired with France's Stephane Houdet to win the men's wheelchair doubles.

The top seeds overcame France’s Michael Jeremiasz and Nicolas Peifer in straight sets 6-3 6-1.