Top seed Kei Nishikori has crashed out of the Dubai Duty Free Tennis Championships.
The world number six from Japan went down in three sets to Poland's Hubert Hurkacz 5-7, 7-5, 2-6.
Elsewhere, Lithuania's Ričardas Berankis beat American Denis Kudla 6-4, 6-1.
Seven-time winner Roger Federer is in action later on Wednesday.
The Swiss star takes on Spain's Fernando Verdasco on Centre Court after 7 PM.

Banton blitz lifts England past Scotland in T20 World Cup
Tudor appointed as interim Tottenham manager until end of season
Eight teams qualify for Dubai Games finals
Shaidorov shocks rivals to capture gold as 'Quad God' Malinin crumbles
