LONDON: Top seeds Rohan Bopanna and Matthew Ebden produced a stellar performance but lost in straight sets to the Russian-American pair of Karen Khachanov and Taylor Fritz in the quarterfinals of the Cinch Championships here on Friday.

Big-serving Khachanov and Fritz, seeded eighth in the tournament, defeated the Indo-Australian pair 7-6 (1), 7-6 (3).

With a winning percentage of 70, Khachanov and Fritz were clearly dominant on their second serve, while Bopanna and Ebden made mistakes on this front.

Bopanna and Ebden, who had reached the French Open semi-finals, registered a 6-4, 6-4 win against Austrian pair of Alexander Erler and Lucas Meidler in the opening round of the ATP 500 grass court tournament on Wednesday.