The 2nd seed Stefanos Tsitsipas made a winning start in Miami, beating a lucky loser Damir Dzumhur 6-1, 6-4 in 68 minutes. The Greek lost only 13 points in nine service games, never facing a break point and scoring three breaks that carried him over the finish line.
Tsitsipas forged a massive advantage in the shortest range up to four strokes, losing ground a bit in the more extended rallies but still doing enough to bring the victory home in straight sets despite Dzumhur's decent effort.
Stefanos broke Damir in the second game and again in the fourth when the Bosnian sprayed a forehand error. The Greek held at 30 in game seven to close the opener in 26 minutes and gather momentum ahead of set number two. He grabbed a break at 1-1 after Dzumhur's double fault and served well in the rest of the encounter to seal the deal with an unreturned serve at 5-4.
The 5th seed Diego Schwartzman needed an hour and 22 minutes to beat Yasutaka Uchiyama 6-3, 6-3. The Argentine saved three out of four break chances and produced four return games to control the scoreboard and secure the 38th Masters 1000 victory.
The 6th seed Denis Shapovalov had a tough day at the office, prevailing over Ilya Ivashka 6-7, 6-4, 6-4 in three hours and six minutes to avoid an early setback.
Stefanos Tsitsipas, Diego Schwartzman, Denis Shapovalov made winning start.
The Canadian saved six out of seven break chances but had to work hard to emerge at the top, earning three breaks to cross the finish line first in the encounter with well over 100 unforced mistakes!
There were no breaks in the opening set, and the Belarusian won the tie break 7-5 for an early advantage. They traded three breaks at the beginning of the second set, two for Shapovalov, who wasted four set points on the return at 5-3 before sealing it on his serve a few minutes later.
The Canadian scored a break in the decider's game seven ahead of the rain delay, continuing 50 minutes later and moving over the top with a hold at love at 5-4. The young American Sebastian Korda defeated Fabio Fognini 1-6, 6-4, 6-2 in an hour and 46 minutes for a career-best win.
The Italian had the upper hand in the opener after stealing the American's serve four times, losing the edge after that and failing to steal the youngster's serve in sets two and three. Sebastian took charge in set number two and stole Fabios's serve at 1-1 before closing it with a comfortable hold at 5-4.
With momentum on his side, Korda grabbed a double break in the decider to advance into the third round.