Andy Murray has been forced to admit defeat in his efforts to recover from a hip problem and looks set to call time on his illustrious career.
The 31-year-old will go down not just as the best British player of all time but one of the greats of the strongest era in men's tennis.
Here, Press Association Sport picks out the key numbers of Murray's career.
1 – Murray became the first British singles player ever to officially be ranked world number one on November 7, 2016.
— ATP Tour (@ATP_Tour) November 20, 2016
41 – The number of weeks the Scot spent on top of the rankings.
3 – Grand slam titles
11 – Grand slam finals
45 – Career singles titles
2 – Doubles titles, both with brother Jamie
9 – Singles titles in 2016, including five in a row to end the season as world number one
2 – Olympic singles gold medals
11 – Murray won all 11 rubbers he contested to drive Great Britain to Davis Cup glory in 2015, an unprecedented feat
663 – Tour-level matches won
61,055,135 – Career prize money, in US dollars
3 – Only person to be named BBC Sports Personality of the Year three times
5,573 – Aces served
29 – Combined wins against Roger Federer, Rafael Nadal and Novak Djokovic