Carlos Alcaraz and Elena Rybakina stay on track for 'sunshine double' at Miami Open

Indian Wells champions Carlos Alcaraz and Elena Rybakina on Tuesday stayed on course to complete the 'sunshine double' at the Miami Open but men's second seed Stefanos Tsitsipas was sent packing by Karen Khachanov.

World No 1 Alcaraz beat Tommy Paul 6-4, 6-4 in the fourth round, while Rybakina notched up her 12th straight win with a 6-3, 6-0 thrashing of Martina Trevisan to reach the semi-finals.

Paul had beaten Alcaraz in their only previous meeting at last year's Rogers Cup but was no match for the Spaniard on this occasion, the top seed showcasing his sensational speed and reflexes to take early breaks in both sets.

Defending champion Alcaraz was denied on his first match point but was soon letting out a mighty roar when Paul sent a forehand long to end the match.

"The key of that match was that I was playing to attack," Alcaraz said. "I didn't let him play his game - attack and go to the net - I did those things first. I played a really complete match."

Alcaraz is now three wins away from securing the 'sunshine double' after his victory at Indian Wells last week - a triumph that would see him retain the world No 1 ranking ahead of Novak Djokovic.

In the quarter-finals, the Spaniard will play another American in Taylor Fritz, who eased past Denmark's Holger Rune 6-3, 6-4 earlier in the day.

Daniil Medvedev swept aside Quentyn Halys 6-4, 6-2 in just over an hour in a contest that started after midnight, sealing his place in the quarter-finals for the third successive year when the Frenchman netted a backhand.

"I thought it was going to be cancelled," Medvedev said. "Really happy that I was able to play not so bad. I'm usually asleep at midnight."

At the Grandstand, Italian 10th seed Jannik Sinner breezed past sixth