The 3rd seed Reilly Opelka will not be able to defend the title in New York, suffering a 5-7, 6-4, 6-4 loss to Jason Jung in the quarters. The Taiwanese was the quarter-finalist in New York a year ago and this is a step forward for him, surviving 24 aces from the American and breaking him twice from seven chances to cross the finish line first.
Opelka claimed the opener with a late break but that wasn't enough to keep him safe, unable to reach at least one tie break and finishing his campaign earlier than expected. Reilly fended off two break chances in the fifth game with winners, landing a backhand down the line winner in game 12 for a break at love and the opening set in his pocket.
Jung responded with a break at 15 at 3-3 in set number two following a loose volley from the American, saving a break point in the next game and creating three set points on the return at 5-3. Opelka repelled them all before Jung grabbed the set with a forehand winner in the next game, gathering momentum and securing another break in the first game of the decider thanks to a lucky net cord.
Jason stayed calm at 2-1, erasing two break chances and serving well in the remaining games to seal the deal with a service winner in game ten, advancing into the first ATP semi-final at the age of 30. Andreas Seppi beat Jordan Thompson 6-7, 6-4, 6-1 in two hours and 14 minutes, facing only three break points and overcoming a 7-6, 3-1 deficit to rattle off 11 of the last 13 games and march into the semis.
In the battle of two young seeds, Miomir Kecmanovic came from a set down to topple Ugo Humbert 3-6, 6-4, 6-2 in an hour and 48 minutes for the second semi-final of the season after Doha. The Serb won three points more than the Frenchman, fending off four out of five break chances and stealing Humbert's serve thrice to move over the top and stay on the course for the first ATP title.
Settling into a nice rhythm, Ugo served well in the opening set and grabbed an early break that led him towards 6-3. The tables turned in set number two when Kecmanovic gained the upper hand, producing four comfortable holds and two breaks in games four and eight for a 6-2.
Serving at 3-3 in the decider, Miomir survived a couple of break chances and scored a break at love in game ten to seal the deal and advance into the final four in style. Kyle Edmund is through to the semis for the first time since Eastbourne last year, edging Soonwoo Kwon 3-6, 6-2, 7-6 in two hours and seven minutes, taking the deciding set tie break 7-5 to oust the younger opponent and stay in contention for the second ATP title.