Last week's champions Daniil Medvedev and Jo-Wilfried Tsonga will meet in the quarter-finals of the Rotterdam Open, while Kei Nishikori also advanced on Thursday.

Medvedev was crowned Sofia Open champion on Sunday and the in-form Russian could claim back-to-back titles this weekend after beating Fernando Verdasco 6-2 7-5.

The fifth seed has now won 13 out of 15 matches in a great start to the season, while Verdasco was left to rue making 42 unforced errors as he bowed out.

Tsonga is on a high following an Open Sud de France triumph in his homeland and was too good for wildcard Tallon Griekspoor, winning 7-6 (7-5) 6-1.