The top seed Daniil Medvedev is through to the third round in Miami, beating Yen-Hsun Lu 6-2, 6-2 in 56 minutes for his 38th Masters 1000 victory. The Russian lost 11 points behind the initial shot, getting broken once and stealing 60% of the return points to grab five breaks from eight opportunities.
Medvedev had a clear advantage in the shortest range up to four strokes, firing 24 winners and 13 unforced errors to control the rallies and seal the deal in under an hour. Lu sprayed a forehand error in the first game to suffer an instant break and fell 3-0 down following Daniil's backhand down the line winner in game three.
Medvedev fended off three break chances in the fourth game to keep the serve intact and secured the opener with a hold at 15 in game eight. Like in the first set, the Russian scored breaks in games one and three in set number two and forged a 5-2 advantage with a break at love.
The top seed landed three service winners in game eight to race over the top and reach the third round. Felix Auger-Aliassime defeated Pierre-Hugues Herbert 6-4, 6-4 in an hour and 32 minutes, losing serve twice and producing four breaks to move over the top in straight sets.
Pierre-Hugues pulled the break back in the opener to stay in touch until 4-4 before Felix grabbed the next two games for 6-4. The same scenario occurred in set number two, with the Canadian earning the crucial break at 4-4 with a forehand return winner and moving over the top with three winners in game ten.
Daniil Medvedev, Jannik Sinner, Felix Auger-Aliassime made winning start in Miami. The 14th seed Karen Khachanov toppled Yannick Hanfmann 6-3, 6-2 in 70 minutes, getting broken twice but securing five return games that kept him safe.
The 21st seed Jannik Sinner had an easy day at the office, beating the Frenchman Hugo Gaston 6-2, 6-2 in 62 minutes. The Italian dropped 13 points in eight service games, fending off all three break chances and securing four breaks to control the scoreboard and sail into the third round.
Alexei Popyrin ousted Reilly Opelka 6-4, 6-2 in 65 minutes, never losing serve and producing three breaks to send the home player out of the competition.