South Africa's Kevin Anderson on Wednesday retired during his second round match at the Paris Masters against Russian third seed Daniil Medvedev.
The scoreline was 6-6 in the first set, but with Medvedev leading 5-2 in the tie-break, Anderson surprisingly called it quits.
Anderson had reached the second round after his Serbian opponent Laslo Djere retired trailing 5-2 in the first set of their opening round match.
Anderson broke back into the world's top 100 after reaching the semi-finals of last week's ATP 500 event in Vienna, where he retired due to a leg injury against eventual champion Andrey Rublev from Russia.
- Compiled by Sport24 staff