Rowling attends the first day of the Laver Cup with husband Neil Murray

JK Rowling looked deep in focus as she looked through the first day of the Laver Cup at the O2 Arena in London on Friday.

The 57-year-old author sat in the middle of the crowd at the event that will see Roger Federer’s marital farewell match on Friday night.

Before taking her seat, she was seen wearing a black coat and purple jacket as she stood by the massive silver trophy with her husband, Neil Murray, 51.

Busy: JK Rowling (second from left) looked deep in focus as she looked through the first day of the Laver Cup at the O2 Arena in London on Friday with husband Neil Murray (bottom left)

The Harry Potter writer completed her look by wearing black pants and matching shoes.

Neil looked elegant in a black jacket and a blue shirt that he wore, open at the collar.

He completed his look by wearing a pair of blue jeans while sporting a pair of black leather boots.

Hitting pose: Before taking her seat, she was seen wearing a black coat and purple jacket as she stood by the huge silver trophy with her husband Neil, 51

Hitting pose: Before taking her seat, she was seen wearing a black coat and purple jacket as she stood by the huge silver trophy with her husband Neil, 51

The pair were joined at the event by model and racing driver Judy Kidd, who sat behind them in the crowd.

The 43-year-old TV personality looked elegant in a white red and blue Aztec-style dress.

Her gown featured a plunging neckline and she complemented her look with accessories with some delicate pendulum earrings.

All-Stars: The pair were joined at the event by model and racing driver Judy Kidd (top right) who sat behind them in the crowd.

All-Stars: The pair were joined at the event by model and racing driver Judy Kidd (top right) who sat behind them in the crowd.

Style: The TV personality looked elegant in a white dress with a red and blue Aztec design while standing with a mug

Style: The TV personality looked elegant in a white dress with a red and blue Aztec design while standing with a mug

She wore a pair of lashes of make-up to accentuate her beautiful features and sat near her fiancé, Joseph Bates.

Elsewhere, rugby player Chris Robshaw, 36, sat nearby and spoke with a friend.

The English athlete, who plays for the San Diego team in California, cut a casual figure in a brown jacket and blue shirt.

Happy couple: She wore a skin of makeup to accentuate her beautiful features and sat next to fiancé Joseph Bates (top left)

Happy couple: She wore a skin of makeup to accentuate her beautiful features and sat next to fiancé Joseph Bates (top left)

Looking at: Elsewhere, rugby player Chris Robshaw, 36 (top right), sat nearby and spoke to a friend, wearing a brown jacket and blue shirt.

Looking at: Elsewhere, rugby player Chris Robshaw, 36 (top right), sat nearby and spoke to a friend, wearing a brown jacket and blue shirt.

Roger Federer received a standing ovation from the 02 Arena fans ahead of the Laver Cup doubles farewell match, on Friday evening.

The Swiss tennis legend revealed earlier this month that the London Championships would be the last competition of his career, having struggled with a string of injuries in recent years.

As he was on his way to the stadium on Friday, where he will participate with Spaniard Rafael Nadal, he was met with chorus and applause from the crowd.

Match: Roger (left) will team up with long-time rival Rafael Nadal for the farewell doubles match.

Match: Roger (left) will team up with long-time rival Rafael Nadal for the farewell doubles match.

Greetings from his fans: Roger received a warm welcome from the fans at the O2 Arena on Friday afternoon

Greetings from his fans: Roger received a warm welcome from the fans at the O2 Arena on Friday afternoon

Success: The Swiss star has won 20 Grand Slam titles throughout his impressive tennis career

Success: The Swiss star has won 20 Grand Slam titles throughout his impressive tennis career

In the final match of his 24-year career, Federer played alongside his long-term rival for Team Europe against American duo Jack Sock and Francis Tiafoe.

The 41-year-old looked relaxed behind the scenes, as he spoke with captain Bjorn Borg and teammates Stefanos Tsitsipas and Matteo Berrettini, before making his way onto the field.

Federer had previously spoken of his desire to play alongside Nadal, before helping captain Borg for Team Europe grant the tennis legend his wish.

The 20-time Grand Slam champion – third in the men’s tally of all time – ranks as one of the greatest titles of all time, with a staggering total of 103 singles titles on the ATP Tour.

The Laver Cup, which Federer helped establish in 2017, sees Team Europe take on Team World in the tennis version of the Ryder Cup golf, with nine singles and three doubles matches at the London Arena.

End of the road: Federer announced earlier this month his plans to retire after this month's Laver Cup

End of the road: Federer announced earlier this month his plans to retire after this month’s Laver Cup