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Isner sets up Sela showdown

Top seed John Isner powered his way into the final of the Atlanta Open for the fourth time in five years with a straight-sets victory over Jack Sock.

The defending champion, currently ranked world No 12, will meet Israeli Dudi Sela on the hardcourt, after dominating on serve to beat his compatriot 7-5 6-4 in an hour and 38 minutes.

Big-serving Isner won 94 per cent of first service points as he moved past his 21-year-old opponent to stay on target to win his ninth career title on Sunday.

"It was not easy conditions at all in the heat today," the American said. "I thought I played pretty well. Jack is a really good player. I wanted to win that match."

He has a 2-0 career head-to-head record against world No 94 Sela, who edged out German Benjamin Becker 6-3 3-6 6-3 in the evening semi-final.

Sela has never won a title on the ATP Tour, losing his only appearance in a final to Andy Roddick in Beijing in 2008, but will get another chance to claim his maiden title at the age of 29.