That's love! Family man David Beckham treats sons Romeo and Cruz to the ATP Tennis Finals... after doting on sweet daughter Harper via Instagram

Marrying his passion for sports with his deep love for family time, David Beckham treated youngest sons Romeo, 13, and Cruz, 10, to the Barclays ATP World Tennis Finals on Saturday.

Having started his day with a touching post about daughter Harper, the trio made it a boys' day out with a spot of spectating at London's O2 Arena. 

Sandwiched between the two eager tennis fans, the father-of-four was engaged in the game, which saw Rafael Nadal take on Novak Djokovic on day seven of the tour.

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Family man: David Beckham treated his two boys Cruz (left) and Romeo (right) to the Barclays ATP World Tennis Finals in London on Saturday

Family man: David Beckham treated his two boys Cruz (left) and Romeo (right) to the Barclays ATP World Tennis Finals in London on Saturday

Recently dubbed the Sexiest Man Alive by People magazine, the handsome family man wore his hair slicked back with a rugged, unshaven appearance and showed off his heavily inked arms in a simple, black T-shirt.

David's boys bore his striking resemblance with well-styled light blonde locks and wide smiles on their faces.

Cruz was hinting at his Star Wars superfan status in a T-shirt emblazoned with the franchise on the front. 

While Burberry model Romeo was naturally strides ahead of his younger sibling on the fashion front and wore a leather jacket with a fur collar and his hair slicked over on one side.

See more of the latest news, pictures and video updates on David Beckham and family 

Too cute: Though in true doting dad style, the father-of-four woke up to celebrating his daughter Harper in her fairy wings as she played the piano

Too cute: Though in true doting dad style, the father-of-four woke up to celebrating his daughter Harper in her fairy wings as she played the piano

Boys' day: With the exception of Brooklyn, David made it a boys' day for his sons on Saturday

Boys' day: With the exception of Brooklyn, David made it a boys' day for his sons on Saturday

One eye on the game: He did entertain his kids, but was locked into the action
Focus: He seemed to be keeping up well

Engaged: He kept his eyes on the tennis at all times, proving himself to be an all-around sports fan

Supportive: David was there to see Rafael Nadal take on Novak Djokovic on day seven of the tour

Supportive: David was there to see Rafael Nadal take on Novak Djokovic on day seven of the tour

Romeo is the star of this year's Christmas campaign for the British heritage brand when he stepped up his connections in the modelling world by featuring alongside Naomi Campbell and Rosie Huntington-Whiteley. 

On Saturday, as the trio enjoyed some dedicated boys' time, the eldest and youngest of the Beckham brood, Brooklyn, 16, and Harper, four, were left behind - as was David's fashion designer wife Victoria.

Though doting father David had started Saturday by paying homage to his adorable little girl when he posted a picture of the four-year-old sitting at a gran piano in their London home.

Photo memories: Romeo captured the match via his telephone, taking photo memories

Photo memories: Romeo captured the match via his telephone, taking photo memories

Bonding: The star seemed to be well-adored by his young children

Bonding: The star seemed to be well-adored by his young children

Cuties: Romeo seemed to have more fun chatting to his dad than watching the tennis

Cuties: Romeo seemed to have more fun chatting to his dad than watching the tennis

He wrote: 'Just a casual Saturday morning playing " Mary had a little lamb " ❤️' 

The little one was dressed adorably in a set of fairy wings and girlie tutu; her hair styled in two bunches.

She looked like she was engrossed in her rendition, clearly demonstrating another talent for the Beckhams to behold.

Handsome: The ruggedly handsome father of four has just been voted People's Sexiest Man Alive

Handsome: The ruggedly handsome father of four has just been voted People's Sexiest Man Alive

Yawn: Cruz seemed a little tired at one point and leaned on the balcony while the others clapped

Yawn: Cruz seemed a little tired at one point and leaned on the balcony while the others clapped

Appreciation: The boys have a well-rounded appreciation for sport, it seems

Appreciation: The boys have a well-rounded appreciation for sport, it seems

Handsome: The trio certainly seemed like a handsome bunch

Handsome: The trio certainly seemed like a handsome bunch

Striking resemblance: The boys were growing into a perfect combination of David and Victoria it seemed

Striking resemblance: The boys were growing into a perfect combination of David and Victoria it seemed

 

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