The tournament's top seed fell behind to compatriot Mohamed Abouelghar in the first game before regaining his composure to pull off an 8-11,11-8,11-7 victory and continue his 100 per cent record against Abouelghar.

ElShorbagy will face world number six Karim Abdel Gawad of Egyptian the quarter-finals.

He downed Colombian Miguel Rodriguez in three games after also finding himself losing after the first game.

A third Egyptian, Marwan ElShorbagy, also progressed to the last eight after beating Frenchman Gregoire Marche 11-7, 11-7.

The fifth seed awaits New Zealander Paul Coll in California after he breezed past Egypt's Youssef Ibrahim 11-6, 11-8.

A best-of-three games format is being used up to and including the semi-finals.

Meanwhile in the women's draw, there was more Egyptian success as world number two Nouran Gohar beat Canada's Hollie Naughton for the second straight event in straight games.

The 23-year-old will face countrywoman Salma Hany after she delivered a crushing 11-3, 11-6, defeat to another Canadian in Danielle Letourneau.

New Zealand's Joelle King and Egypt's Hania El Hammamy are also set to meet in the quarter-finals after beating Americans Sabrina Sobhy and Olivia Clyne, respectively.