Another of the fancied names crashed out of the US Open as Grigor Dimitrov was beaten by teenager Andrey Rublev.

The seventh seed went into the tournament among the favourites to win his first grand slam crown after claiming his most important title in Cincinnati two weeks ago.

But his career so far has been a story of flattering to deceive and this was yet another example, with Rublev winning 7-5 7-6 (7-3) 6-3.

At 19, the Russian is one of the talented teens looking to take over the game but has been overshadowed thus far by the likes of Alexander Zverev and Denis Shapovalov.

This was his breakthrough moment on the big stage, and he showed impressive temperament to withstand pressure from his opponent.

Dimitrov was a break up in both the first two sets but Rublev hit back, saving eight of 10 break points before taking his first match point with a brilliant forehand winner.

Dimitrov is the third top-10 seed to fall, joining Zverev and Jo-Wilfried Tsonga, while second seed Andy Murray pulled out before the start because of injury.

Rublev, who next meets unseeded Bosnian Damir Dzumhur, joins Shapovalov in round three, making it the first time since 2008 that two male teenagers have reached this stage at Flushing Meadows.

Former champion Juan Martin del Potro beat Adrian Menendez in straight sets to advance to the third round while Alexandr Dolgopolov eliminated 15th seed and 2010 Wimbledon finalist Tomas Berdych.

Damir Dzumhur and Viktor Troicki also kept their campaigns alive.