ATP roundup: Tallon Griekspoor knocks off No. 2 seed in Dubai
Tallon Griekspoor of the Netherlands used his strong serve to upset No. 2 seed Alexander Bublik of Kazakhstan 6-3, 7-6 (4) in the Round of 16 at the DTallon Griekspoor of the Netherlands used his strong serve to upset No. 2 seed Alexander Bublik of Kazakhstan 6-3, 7-6 (4) in the Round of 16 at the D