World number one Andy Murray will be targeting a 22nd successive win on Friday when he tackles Stan Wawrinka in the ATP World Tour Finals.
Murray is close to securing a semi-final place in London, and will be aiming for a fifth successive title.
Here Press Association Sport looks at key statistics from his hot streak:
124 - aces fired down by Murray during his unbeaten sequence.
2.8million - prize-money, in British pounds, won by Murray since he last lost.
5 - sets he has dropped in the last 21 matches.
63 - when Murray plays Stan Wawrinka on Friday, 63 days will have passed since he last lost a match - to Juan Martin del Potro on Davis Cup duty.
46 - Murray is still 25 wins short of the open era record of 46 consecutive wins, achieved in 1977 by Argentinian Guillermo Vilas.
2 - Murray has had two walkovers during his run of victories, when opponents pulled out before scheduled matches. Walkovers are not counted in winning streaks.
22 - Murray is one win from matching his career-best 22-match undefeated run from earlier this season, during which he won the Queen's Club, Wimbledon and Olympic titles.
8 - The Scot has now won a tour-leading eight titles in 2016.
Source: PA
