Greek world No.6 Stefanos Tsitsipas' Wimbledon preparations have suffered a big blow after he crashed to a 6-4 3-6 6-4 defeat against Chilean Nicolas Jarry in the second round of the Libema Open.
Top seed Tsitsipas, who received a bye in the opening round, landed just 59 per cent of his first serves and was broken twice in a sluggish display to hand the 60th-ranked Jarry victory in two hours.
Tsitsipas was playing his first match since losing to Stan Wawrinka in the last last-16 of the French Ope.
The 20-year-old will look to improve on last year's fourth-round appearance at Wimbledon when he returns to the All England Club next month.
Jarry will meet either Kazakh Mikhail Kukushkin or France's Richard Gasquet in Friday's quarter-finals.