Isner stuns Zverev in three set Miami Open title tussle
John Isner claimed the biggest title of his 14-year career as he defeated Alexander Zverev in an absorbing Miami Open final.
Isner followed Sloane Stephens' victory to give the USA their first clean sweep at Key Biscayne since 2004 when Andy Roddick and Serena Williams swept to glory.
The 32-year-old sealed a stunning 6-7 (4-7) 6-4 6-4 comeback victory in two hours and 29 minutes to land his maiden Masters title.
"I couldn't have scripted this. I came into this tournament, I won one ATP (World Tour) match all year and was playing very poorly," Isner said.
"I won my first match in three sets and that's how tennis goes - you start to gain a little confidence and next thing you know things start to roll your way." Isner will become the top-ranked American and move up to ninth in the world rankings today when the statistics are published.