Defending Miami Open champion Daniil Medvedev and top seed Carlos Alcaraz marched into the quarter-finals of the tournament on Tuesday with convincing victories.

Miami Open: Medvedev and Alcaraz Advance

Medvedev earned a 7-6 (7/5), 6-0 win over Germany's Dominik Koepfer while Alcaraz took care of Italian Lorenzo Musetti with a 6-3, 6-3 win in 85 minutes.

Medvedev's Victory

Second seed Jannik Sinner of Italy also moved into the last eight beating Christopher O'Connell of Australia 6-4, 6-3.

Alcaraz's Dominance

Alcaraz, who is searching for the 'Sunshine Double' after winning in Indian Wells, was too much for 23rd seed Musetti although the Italian certainly contributed to a crowd-pleasing contest.

Alcaraz's Remarkable Shot

Stadium court erupted after a rally in the third game of the second set saw Musetti clip the ball between his legs, lobbing Alcaraz but the Spaniard returned it with a 'tweener' only to lose the point to a deft volley at the net.

Alcaraz's Comment

"I tried to play my game, to play aggressive shots, go to the net, drop shots, my style in general and I think I did pretty well and I am happy with the performance," said the Spaniard, who was enthusiastic about his form.

Medvedev's Resilience

Medvedev made an unusually sloppy start on Stadium court, with a series of unforced errors, and found himself trailing 4-0 in the first set tie-break. But having overturned that deficit, Medvedev went on to win all the remaining games as he showed that, despite his concerns over the rapid deterioration of balls on the hard court surface, he is comfortable with the conditions.

Medvedev's Analysis

The Russian suggested that Koepfer had struggled to recover from the blow of seeing his tie-break lead vanish.

Quarter-Final Matchups

In the quarters, Alcaraz will face Bulgarian Grigor Dimitrov, who beat Pole Hubert Hurkacz, triumphing in a third set tie-break for a 3-6, 6-3, 7-6 (7/3) win.

Medvedev's Next Opponent

The world number four, Medvedev will face Chilean Nicolas Jarry who upset Norwegian seventh seed Ruud with a 7-6 (7/3), 6-3 win.

Upcoming Matches

Sinner will face Czech Tomas Machac who eased into the quarters with a 6-3, 6-3 win over another Italian, Matteo Arnaldi.