Miami Open: Juan Martin del Potro beats Nishikori
What's the story
Juan Martin del Potro beat Japan's Kei Nishikori with ease in the round of 32 at the Miami Open.
The Argentine was so dominant that he outclassed Nishikori 6-2, 6-2 in just an hour and 12 minutes.
The world number 6 won 77% of his points from his first and second serves.
Here is a wrap up of other results.
Heartbreak
Grigor Dimitrov ousted from Miami Open
World number 4 Grigor Dimitrov succumbed to his fourth defeat in the last five matches.
The Frenchman Jérémy Chardy beat the Bulgarian 6-4, 6-4 at the Miami Open.
World number 17, John Isner beat Russia's Mikhail Youzhny 6-4, 6-3 to set up a next round clash against world number three and the current top seed Croatian Marin Cilic.
Data
Raonic sets up Chardy clash
27-year-old Canadian Milos Raonic saw off a stern challenge from Argentine Diego Schwartzman, beating him 7-6 (7-5), 6-3. Raonic will now face Jeremy Chardy in the next round.
Dominant
Kvitova, Svitolina and Ostapenko win
Czech Petra Kvitová staged a remarkable comeback to beat American Sofia Kenin 3-6, 6-2, 6-4.
Ukrainian Elina Svitolina beat her Australian opponent Daria Gavrilova in a thumping fashion. After doing down 4-6 in the first set, she won the next two 6-0, 6-1.
Jeļena Ostapenko made light work of her Brazilian opponent Beatriz Haddad Maia beating her 6-2, 7-6.