From Dunblane schoolboy to two-times Wimbledon champion, Sir Andy Murray's career has been one of highs and lows.

As he announces he could retire after this month's Australian Open after struggling with a hip injury for 20 months, take a look back at his career in pictures.

Celebrating his victory in the boys' US Open 2004 with mum, Judy. Credit: PA
Beating Richard Gasquet in a five-set thriller at Wimbledon in 2008 to reach his first quarter-final at SW19. Credit: PA
Representing Great Britain in the doubles at the 2008 Beijing Olympics with his brother Jamie, 2008. Credit: AP
Losing his first Wimbledon final to Roger Federer, 2012. Credit: PA
Getting his revenge on Federer five weeks later, beating him in the London 2012 Olympic final to win the gold medal for Great Britain. Credit: PA
After being crowned US Open champion and winning gold at 2012 Olympic singles and silver in the mixed doubles with Laura Robson, Andy got a hero's welcome in his home town of Dunblane in 2012 Credit: PA
The moment Andy Murray won the 2013 Wimbledon Singles Final, becoming the first British man to do so since Fred Perry in 1936. Credit: PA
Hugging his mum Judy after his victory. Credit: PA
In 2014 Andy appointed former world No. 1 Amelie Mauresmo as his coach. He said the level of sexism she was subjected to as a result was staggering. Credit: PA
Leading Britain's Davis Cup team to victory in 2015. Credit: PA
Winning Sports Personality of The Year in 2015. Andy Murray has won the trophy four times. Credit: PA
Losing to Djokovic for the fifth time in the Australian Open final, 2016. Credit: PA
Murray reached the French Open final for the first time in 2016 where he lost to Djokovic once again. Credit: PA
Winning the 2016 AEGON Championships at Queen's Club, June 2016 - Murray has lifted the biggest trophy in tennis five times. Credit: PA
Leading out Team GB at the Rio Olympic Games 2016 Opening Ceremony was 'one of the proudest moments' in his life. Credit: PA
Murray won gold again at Rio 2016. Credit: PA
Finishing the year as World No.1 in December 2016. Credit: PA
Murray lost to Sam Querrey in the Wimbledon Quarter-Finals, 2017 in what could potentially be his last match at SW19. Credit: PA
After struggling with a hip injury for two years, an emotional Murray admitted the 2019 Australian Open may be his final tournament. Credit: PA