Top seed Carlos Alcaraz reached the Miami Open quarter-finals with an efficient straight-set win over Italy’s Lorenzo Musetti.

Spaniard Alcaraz, 20, won 6-3 6-3 and will play Poland’s Hubert Hurkacz or Bulgarian Grigor Dimitrov next.

Australian Open champion Jannik Sinner and Russian Daniil Medvedev both also progressed with straight-set victories.

Italy’s Sinner, 22, won 6-4 6-3 against Christopher O’Connell, while Medvedev defeated Dominik Koepfer 7-6 (7-5) 6-0.

Indian Wells champion Alcaraz ensured he remains on course to complete the Sunshine Double – winning the two prestigious American hard court tournaments in the same season.

The 2022 Miami winner took a comfortable first set against Musetti with a double break and, after Musetti broke back in the seventh game of set two, Alcaraz responded to that sole setback immediately before serving out the match.

World number three Sinner, who triumphed in his first major final in Melbourne in January, will play Czech Tomas Machac for a semi-final place.

Sinner had fallen a break of serve behind against 66th-ranked Australian O’Connell but he reeled off four successive games to turn around the first set, before striking early in the second on his way to clinching an ultimately straightforward victory.

Upcoming opponent Machac, who ended Briton Andy Murray’s hopes in the third round, beat Italy’s Matteo Arnaldi 6-3 6-3.

Fourth-ranked Medvedev’s win over German Koepfer set up a meeting with Nicolas Jarry, after the 22nd seed stunned Norway’s world number eight Casper Ruud 7-6 (7-3) 6-3.