Poland's Hubert Hurkacz defeated Italian teenager Jannik Sinner in straight sets to win the Miami Open and claim the first ATP Masters title of his career on Sunday. The 26th-seeded Hurkacz, who had eliminated four higher-ranked players en route to the final, held his nerve at Miami's Hard Rock Stadium to win 7-6 (7/4), 6-4 in 1hr 43min. rcw/bb