Serena Williams tenderly kisses her daughter on the cheek as she joins husband Alexis Ohanian on a superyacht

While other sweet pictures saw Alexis cuddling their 18-month-old daughter as they had a family day out.

The couple were joined by a collection of friends as they hung out and chatted on the balcony section of the superyacht.

Serena cut a casual figure in a pair of denim shorts with a blue jumper which had ‘baby, baby, baby’ written on it in gold writing.

Her appearance comes after she pulled out of her second event in succession on Saturday night when she scratched from the Miami Open with an injured left knee.

Sweet: The tennis champion, 37, was spotted enjoying her mum duties as she tenderly kissed her toddler child on the cheek

Family day out: While other sweet pictures saw Alexis cuddling their 18-month-old daughter as they had a family day out

The latest setback will hardly encourage hopes among her fans that, at 37, she can win a 24th Grand Slam – something that has proved elusive since she returned a year ago after a career hiatus when she gave birth to her daughter.

Williams was due to meet Jo Konta’s conqueror Qiang Wang on Sunday, but is unable to compete at what is traditionally one of her favourite tournaments not far from her Florida base.

It has been a disappointing year for the American great, who in January lost in the Australian Open quarter final to Karolina Pliskova after having a 5-1 lead in the deciding set.

Earlier this month she withdrew midway through her second match with a viral illness.

‘Baby, baby, baby’: Serena cut a casual figure in a pair of denim shorts with a blue jumper which had ‘baby, baby, baby’ written on it in gold writing

Chill time: The couple were joined by a collection of friends as they hung out and chatted on the balcony section of the superyacht

Family of three: Serena and her Reddit co-founder husband, Alexis, 35, welcomed their daughter in September 2017, two months before their New Orleans wedding (pictured in November)

Scary: In the past, the sports star has spoke candidly about her harrowing experience to CNN, admitting she ‘almost died’ in childbirth (pictured in January)