Japan's Kei Nishikori came through a tough test against Spaniard Fernando Verdasco, 7-6 (7/2), 6-7 (5/7) 6-1 at the Miami Open on Sunday, his three sets win taking him into the last 16. 
Last year?s beaten finalist, Nishikori will face Argentine Federico Delbonis who beat Germany?s Jan-Lennard Struff. 
Verdasco has yet to post a win against a top ten opponent this year but showed plenty of spirit in a two hours 44 minute contest on centre court at Crandon Park fighting back to win a second set tie-break. 
But Nishikori stepped up in the third, running away with the set to ensure his progress. 

Source: QNA