Britain's Jack Draper succumbed to a last-16 defeat by Alejandro Davidovich Fokina in an entertaining match at the Monte Carlo Masters.
The 23-year-old twice came back from a break down in the deciding set but could not find a consistent level, losing 6-3 6-7 (6-8) 6-4 to the Spaniard.
Indian Wells champion Draper had cruised to victory in his first clay-court match of the year but looked out-of-sorts at times against Davidovich Fokina.
The new world number six made 46 unforced errors, recorded 10 costly double faults and converted just four of his 16 break opportunities.