World number 374 Yoshihito Nishioka came to Miami with a protected ranking after being sidelined with an injury, and he claimed his seventh Masters 1000 victory with a 6-2 6-4 triumph over another youngster Alex de Minaur in an hour and 16 minutes. Nishioka played well in his games, losing serve twice from four opportunities he gave to Alex, and he was even more impressive on the return, winning 52% of the points in Aussie's games to steal his serve five times and book the place in the second round.
Nishioka settled into a nice rhythm right from the start and he broke de Minaur three times in a row in the opening set for a 6-2. Alex recovered his game in set number two and he created a 4-2 gap with a break in game six, only to lose the last four games of the match, getting broken in games seven and nine before Yoshihito claimed the win with a hold in game 10.
Denis Shapovalov grabbed his seventh Masters 1000 in a career but he will try to forget the match against Viktor Troicki as soon as possible! The young Canadian toppled the Serb 6-3 6-7 7-6 in 2 hours and 26 minutes, wasting five match points in the final set before he found himself 6-5 down in the tie break. Shapovalov kept his coolness to avoid a disaster and he rattled off the last three points of the match to cross the finish line first on his sixth match point.
Denis had seven aces but also nine double faults and he was forced to play against 14 break points, saving 11 to stay in touch with his rival. Troicki suffered four breaks and he did a great job at 5-1 down in the deciding set to climb back and save all five match points in games seven and ten.
Shapovalov almost lost the ground entirely and he saved a match point in the tie break with a smash winner, crossing the finish line when Troicki double faulted at 6-7, ending this crazy match in the worst possible way. First round results: