Juan Martin Del Potro

Isner earns biggest win, beating Zverev in Miami Open final

John Isner punctuated his unexpected run to the Miami Open title with a surprising display of agility, dancing across the court while basking in a breakthrough.

The 6-foot-10 Isner looked twice as tall skipping about with a grin brighter than the Florida sunshine. He had just won the biggest title of his 14-year career, holding every service game and rallying past Alexander Zverev 6-7 (4), 6-4, 6-4 on Sunday.

Isner, who turns 33 this month, previously had been 0-3 in ATP Masters 1000 finals.

"You can't replicate moments like this," Isner said during the trophy ceremony. "I'm toward the latter part of my career; this is the best moment of my...

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