Gallery: The story from a spectacular opening day at the 2018 US Open

Shahida Jacobs
Arthur Ashe stadium
Arthur Ashe stadium

Here is your pictorial from the opening day of the 2018 US Open at Flushing Meadows.

It was a frustrating start for world No 1 Simona Halep against Kaia Kanepia.

Simona Halep frustrated

Estonian Kanepi caused the first upset of the 2018 US Open as she beat Halep 6-2, 6-4.

Kaia Kanepi celebrates

The Romanian became the first top seed to lose in the first round of the US Open in the Open Era.

Simona Halep frustrated

Kyle Edmund was pumped early on against Paolo Lorenzi in his opener in New York,but it was the Italian who came out on top.

Kyle Edmund pumped at US Open
Kyle Edmund pumped at US Open

How good is it to see Andy Murray back in Grand Slam action?

Andy Murray fist pump

Serena Williams made a triumphant return to Flushing Meadows.

Serena Williams US Open
Serena Williams of the US hits a return to Magda Linette (out of frame) of Poland during their 2018 US Open Women's Singles match at the USTA Billie Jean King National Tennis Center in New York on August 27, 2018. (Photo by EDUARDO MUNOZ ALVAREZ / AFP) (Photo credit should read EDUARDO MUNOZ ALVAREZ/AFP/Getty Images)

A closer look at Serena’s dress.
Serena Williams US Open attire

And sister Venus also advanced into round two as she beat Svetlana Kuznetsova.

Venus Williams celebrates
NEW YORK, NY - AUGUST 27: Venus Williams of the United States reacts during her women's singles first round match against Svetlana Kuznetsova of Russia on Day One of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)

It was a case of down and out for Kuznetsova.
Svetlana Kuznetsova on the floor

As did defending champion Sloane Stephens.

Sloane Stephens celebrates
Sloane Stephens of the US reacts to a point while playing against Evgenlya Rodina of Russia during their 2018 US Open women's match August 27, 2018 in New York. (Photo by Kena Betancur / AFP) (Photo credit should read KENA BETANCUR/AFP/Getty Images)

And John Inser made it an even better day for the Americans.

John Isner serves
NEW YORK, NY - AUGUST 27: John Isner of the United States serves the ball in his mens singles first round match against Bradley Klahn of the United States on Day One of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Julian Finney/Getty Images)

Kevin Anderson defied cramp to outlast Ryan Harrison.

Kevin Anderson forehand

Arthur Ashe court was briefly turned into a music venue.

Arthur Ashe stadium
Arthur Ashe stadium

With US songstress Kelly Clarkson providing the entertainment.

Kelly Clarkson

When the action resumed, Juan Martin del Potro was too good for American Donald Young.

Juan Martin del Potro celebrates

The defending champion Rafael Nadal arrives on court.
Rafael Nadal arrives on court

David Ferrer didn’t have a great evening as he struggled with a calf injury.
David Ferrer wipes his face

Nadal powered his way into the second round after Ferrer was forced to retire.
Rafael Nadal plays a shot