The Egyptian, the world number one and reigning world champion, was in fine form as he completed an 11-8, 11-5, 11-7 success in a little over half-an-hour.

It means he has booked his place in the quarter finals of the World Tour Platinum event at the Khalifa International Tennis and Squash Complex in Doha.

Waller could not back-up his stunning win in the previous round against Egypt's world number three Omar Mosaad. 

"The way he played against Mosaad was unbelievable - you don't beat Mosaad like that if you aren't a great player and he showed that he is a great player with the way he played this week," said Elshorbagy.

"He put me under a lot of pressure throughout the whole match but the most important thing is that you don't let it get to you. 

"I feel like I had good preparation for this event - I feel good, physically strong and mentally fresh."

Other round three matches included a win for New Zealand's Paul Coll who advanced after Spain's Borja Golan retired.

The Kiwi seventh seed led 11-3, 12-10, 3-0 at the time.

Germany's Simon Rösner, the fourth seed and world number five, defeated England's Tom Richards in four games.

He was successful 11-9, 11-5, 9-11, 11-7.

Another Englishman also exited as James Willstrop lost to Egypt's third seed Tarek Momen.

Willstrop went in front but Momen prevailed 7-11, 11-0, 11-1, 11-7.

Peru's eighth seed Diego Elias accounted for Egypt's Mazen Hesham 11-7, 11-6, 11-5.