Tennis star vacations after taking the year off

After opting out of the WTA Finals and end her season early, Serena Williams has been having a nice time away from the court.

She announced that she will not be playing again this year after her shock loss to Italy's , which ended her bid to claim all four grand slam titles in the same season.

In some Instagram photos, Williams is pictured with model and television star Colton Haynes, by the San Marcos River in Texas.

Serena said said she had been carrying injuries and the loss to Vinci had taken its toll, adding she would not play again this year.

"My journey in tennis this year has been at times exhilarating, at times disappointing," Williams said in a statement carried by China Open organisers.

Read: Serena Williams cites health reason for opting out of season

"I've played injured most of the year — whether it was my elbow, my knee, or in the finals moments after a certain match in Flushing, my heart.

"I’m a fierce competitor and I want to compete as well as I can, for as long as I can.

Read: Serena Williams loses US Open

"This is a very difficult decision, but one ultimately made because of the love of the game."

Watch this video of Serena Williams video, below: