Miami Open: Naomi Osaka In Quarters, Iga Swiatek Cruises

Naomi Osaka will face American Danielle Collins for a place in the semi-finals of the Miami Open after the Japanese star beat Alison Riske while newly minted world number one Iga Swiatek also advanced comfortably.

Naomi Osaka will face American Danielle Collins for a place in the semi-finals of the Miami Open after the Japanese star beat Alison Riske 6-3, 6,4 on Monday. Osaka has responded strongly in Florida, advancing to the quarter-finals after leaving Indian Wells in tears earlier this month after being heckled by a fan. The four-time Grand Slam champion, who received a walkover in the previous round, is yet to drop a set and remains one of the favorites to land the title. "I am definitely happy," Osaka said afterwards during a courtside interview.

"Last year I got to the quarters in Miami after winning in Australia and I am winning matches here this year too but I feel more grateful - this is one of the funnest times of my life."

"There were a lot of things running through my mind last year," added Osaka who was able to stay firmly on the front foot against American Riske while saving seven of eight break points faced.

"Maybe it was trying to return to number one or other things which aren't that important but at the time was so heavy in my head. I am just happy to be healthy," added Osaka, who recently revealed she has benefited from therapy to address her mental health issues.

Ninth seed Collins, who reached the semi-finals in Miami in 2018, beat Ons Jabeur 6-2, 6-4 earlier in the day.