Britain's Aljaz Bedene lost in straight sets to Uzbekistan's Denis Istomin in round one of the Rotterdam Open.
World number 105 Bedene, who beat Istomin in the qualifiers for Rotterdam, lost 6-3 7-6 (7-3).
The 27-year-old missed three set points and hit his racquet on the floor after going 6-1 down in the tie break.
Istomin, who knocked Novak Djokovic out of the Australian Open in January, will face either Grigor Dimitrov or Mischa Zverev in the next round.