Poor old Jiri Lehecka won't forget the day he ran into the world No.1 Jannik Sinner at his most demonically ruthless - and still earned a standing ovation.
Lehecka is no mug, a 23-year-old Czech who reached the Australian Open quarter-finals a couple of years ago, who's been on the verge of the top 20 and is still a force to be respected on tour at No.34.
None of which proved any defence against a supreme champion back on a mission on Saturday as Sinner gave Lehecka such a hiding that the only decent thing the crowd on Court Suzanne Lenglen could do was to rise and roar when he finally won a game at the 12th time of asking.