The second seeds saved two championship points to beat two-time champions Bob and Mike Bryan 6-4 6-7 (5-7) 11-9.

It was the first match the top-seeded Bryan brothers, who have won 118 Tour titles, had lost in Atlanta.

Australia's Alex de Minaur beat American Taylor Fritz 6-3 7-6 (7-2) to win the men's singles title.

Fritz had beaten British number two Cameron Norrie in the semi-finals.

"Things were looking good for us in the [second set] tie-break, but they came up with the goods when they needed to. That's why they're the best [team] that's ever been," said Inglot of his American opponents.

"It was back and forth in the match tie-break, but Austin played two unbelievable points to get us the tournament."

Inglot and Krajicek won their first doubles crown in 's-Hertogenbosch in June, with the former securing his 13th ATP Tour doubles title.