At an emotional press conference ahead of the Australian Open, the Scot revealed next week's first-round match against Roberto Bautista Agut could be his last, although he is hoping to retire after Wimbledon.
Here, Press Association Sport looks at the highs and lows of a rollercoaster career.
Highs
Summer of 2012
Only a month after his tearful fourth grand slam final loss to Roger Federer at Wimbledon, Murray gained redemption in spectacular fashion by emphatically defeating the Swiss to claim Olympic gold on Centre Court. He followed it up at the US Open by ending the long wait for a British male grand slam singles champion with a dramatic five-set victory over Novak Djokovic.
First Wimbledon
The victory that will always be top of the pile came on a glorious summer's day at SW19. Murray faced Djokovic again in front of a expectant crowd on Centre Court and rode the wave to finally consign Fred Perry to history, surviving a nerve-jangling final game.
Davis Cup glory
Wimbledon was Murray's crowning individual glory but arguably his most extraordinary accomplishment was winning the Davis Cup for Britain almost single-handed. His brother Jamie and James Ward chipped in but Murray won an unprecedented 11 out of 12 rubbers across four ties.
2016 Wimbledon and Olympics
After reuniting with Ivan Lendl, Murray swept to his third slam title at Wimbledon, this time beating Milos Raonic. And a month later he made some history for himself, overcoming Juan Martin Del Potro in Rio to become the first tennis player to successfully defend an Olympic singles title.
World number one
The season of Murray's career had a golden ending when a run of five straight tournament victories, culminating in victory at the ATP Finals in London, carried him to the world number one ranking.
Lows
Knee trouble
Murray feared his career might be over before it began when knee pain interrupted his training in Spain at the age of 16. He was diagnosed with a bipartite patella but was able to manage it effectively.
Anyone but England
Teenage joshing with Tim Henman during an interview in 2006 came back to haunt Murray when his joke that he would be supporting 'anyone but England' at that summer's football World Cup was widely publicised and damaged his public image and his relationship with the press for several years.
Back surgery
Murray's first time under the knife came in 2013, when he decided a troublesome back problem needed to be fixed by surgery. The Scot was only sidelined for three months but it took him a long time to fully recover.
Lendl split
While Murray was working his way back in 2014, he was dealt a major body blow when mentor Lendl decided he no longer wanted to continue their relationship. Their reunion in 2016 helped the Scot win more of the sport's biggest prizes.
Hip pain
The low that has overshadowed all the rest began after the French Open in 2017, when Murray found he was no longer able to recover from chronic hip pain that he had been managing. Despite surgery and long periods of recovery and rehabilitation, the 31-year-old has not found a solution.
Fast Results
Scores
