Cameron Norrie's wait for a first appearance in the last 16 of a Grand Slam goes on after he became the final British singles player to fall at the French Open.
British men's number one Norrie was below his best as he lost 6-2 7-5 5-7 6-4 to 21st seed Karen Khachanov.
Norrie, seeded 10th, paid the price for taking just one of 14 break points in the opening two sets.
The 26-year-old has lost in the third round at four of the past five majors.
Going deep at a Grand Slam has been one of the left-hander's major targets and he has not yet been able to achieve it, despite his rapid rise up the ATP rankings over the past two seasons.