Dominic Thiem's tennis career came to an end as he lost to Luciano Darderi in the first round of the Vienna Open.
Former world number three Thiem, who won the Vienna title in 2019, was beaten 7-6 (8-6) 6-2 by Italian Darderi.
Austria's former US Open champion announced last week that he would retire after his home tournament.
Following his defeat to world number 42 Darderi, the crowd held up cards displaying the Austrian flag and the message 'Danke Dominic' ('Thank you Dominic').
Thiem, 31, gave an on-court speech before placing his racquet in a glass case, to be auctioned to raise funds for charity.