Andy Murray received his OBE from Prince William at Buckingham Palace on Thursday despite fears he would be late.
The Scot tweeted he was "in the middle of a drug test" earlier this morning and joked "I'm goin' to be late!!!"
Murray arrived on time though, and was accompanied by girlfriend Kim Sears as well as his parents Judy and Will.
The 26-year-old became the first male Briton to win the Wimbledon singles title in 77 years when he defeated Novak Djokovic in straight-sets in July.
However Murray will not play again this year as he recovers from back surgery in a bid to be fit for January's Australian Open.
The Duke of Cambridge carried out his first investiture ceremony as he stands in for the Queen.