World No. 1 Novak Djokovic cruised through his opening match at the Miami Open on Friday evening, dispatching Austrian Bernard Tomic 7-6 (2), 6-2 in 73 minutes.
Djokovic faced just one break point, losing it as Tomic broke him at love for a 3-2 advantage in the opening set. But Djokovic broke right back to even it at 3-3 and took care of the tiebreaker to claim the set. The Serbian broke Tomic again to open the second set, and then once more for a 5-2 edge before serving out the match.
Djokovic is a six-time champion of the event, tied with Andre Agassi for the most Miami titles. He'll next face Federico Delbonis, after the Argentine beat Australian No. 32 seed John Millman 7-5, 3-6, 7-6 (2).
Third-seeded Dominic Thiem, fresh off a tremendous run to win the BNP Paribas Open, saw his tournament end quickly on Friday, losing 6-4, 6-4 to Poland's Hubert Hurkacz in just 77 minutes.
The Austrian -- who moved up to No. 4 in the world with his win at Indian Wells -- went up a break in each set, including in the first game of the match, but he faced 10 break points and saved only six. Four of those saves came while leading 4-3 in the second set, but Hurkacz converted the fifth to get to 4-4, and the underdog broke again two games later to clinch the match.
Serbia's Dusan Lajovic provided another major upset Friday, rallying to knock off fifth-seeded Kei Nishikori of Japan 2-6, 6-2, 6-3.
Lajovic, ranked 44th in the world, earned nine break-point opportunities and converted five, all in the final two sets. He saved three of the six he faced against Nishikori, the world's sixth-ranked player.
The other top-10 seed in action on Friday, seventh-seeded American John Isner, avoided an upset with a 7-6 (2), 7-6 (7) victory over Italian qualifier Lorenzo Sonego.
Georgian No. 17 Nikoloz Basilashvili, British No. 19 Kyle Edmund, Spanish No. 22 Roberto Bautista Agut and Australian No. 27 Nick Kyrgios each advanced in straight sets. Croatian No. 11 Borna Coric and Italian No. 15 Fabio Fognini each needed three sets to move on, while Canadian No. 12 Milos Raonic advanced when German Maximilian Marterer withdrew.
Other seeded players to fall were Frenchmen Gilles Simon (No. 23) and Lucas Pouille (No. 25), and Hungarian Marton Fucsovics (No. 29).
--Field Level Media