Hesham, a strong favourite for the tie, had to come from one game down to defeat Mueller 4-11, 11-8, 11-9, 7-11, 12-10, eventually winning a tense final game.

"It was really tough today and I had to work until the end," Hesham said.

"But a win is a win and I’m happy to win in a tournament like this, it’s very close to my heart. 

"I know everybody here, it’s like a second home here, so it’s really good to win in front of them. 

"I’ll focus on the next round now and see how it goes."

In the next round, Hesham will face compatriot and number four seed Marwan ElShorbagy after he defeated Mexico's Cesar Salazar in straight games, 11-8, 11-7, 11-7.

The United States' home hopes were also dashed in today's action as Shahjahan Khan lost to England's Nathan Lake, who secured his PSA World Tour gold-level quarter-final spot as a result. 

Lake won 13-11, 11-4, 12-10.

He will face France's Gregoire Marche in the quarter-finals, after he beat Egypt's Omar Mosaad 11-3, 11-7, 11-5.

Tomorrow's action features all four quarter-finals, with six of the top eight seeds all having sailed through thus far.