Matt Ebden charge toward his maiden ATP Tour title was halted in the Atlanta Open semi-finals by defending champion John Isner.

The Australian world No.55 Ebden dropped his first sets of the tournament in the two encounter which the American top seed won 6-4 6-7 (6-8) 6-1.

In the final Isner will meet the winner of the match between American eighth seed Ryan Harrison and British left-hander Cameron Norrie, who overcame Nick Kyrgios in the previous round when the Australian second seed retired due to injury.