PSA world number three El Hammamy needed only 32 minutes to win 11-4, 11-6, 11-5 against Sobhy who is the top-ranked American player.

"I’m definitely happy with the way I performed and how I was able to be consistent throughout the whole match," El Hammamy said.

"I had a couple of testing rounds at the beginning of the tournament.

"It’s great to have challenging matches at the beginning so they can give you more confidence for the next rounds."

El Hammamy had lost to Sobhy when the pair met in the British Open quarter-finals last month.

"I lost to Amanda two weeks ago at the British Open, I wasn’t really happy with how I performed mentally or tactically," she admitted. 

"I came here with a plan today and I’m happy to be able to execute it well."

El Hammamy will face fellow Egyptian Nouran Gohar in the semi-finals.

Gohar, who has just spent 57 weeks at the number one spot in the PSA world rankings, beat her compatriot Nour El Tayeb 11-5, 11-6, 11-5 in only 31 minutes.

"Nour is a very high-quality player, she has so much experience, so much talent, and to beat her in three is an amazing result," Gohar said.

"I’m pleased with the way I played, but I’m still not done yet. I’m just thinking a match at a time and not really about what I have done in the past few days."

A third Egyptian, six-time world champion Nour El Sherbini also features in the quarter-finals.

She has returned to world number one in the newly released PSA rankings after her victories in the Tournament of Champions and British Open.

El Sherbini faces Georgina Kennedy of England in the other half of the quarter-final draw.

New Zealand’s world number four Joelle King is to play Belgium’s Nele Gilis who has just moved into the top ten in the rankings.

In the men’s competition, world number three Mostafa Asal won another all-Egyptian contest against world number nine Mazen Hesham, winning 11-9, 3-11, 11-6, 5-11, 12-10 in 74 minutes.

Asal turns 22 tomorrow but needed a tie-break in the last game to secure victory.

"I played until the last second and I was expecting to be going home, I was thinking it was going to be a nightmare birthday for me," Asal admitted.

"He was playing some superb squash and he was attacking too much and my length wasn’t good in the fourth or the fifth, but I played on in the last minutes, until the last second."

Asal now faces another all Egyptian contest against Ali Farag who beat New Zealander Paul Coll 11-3, 5-11, 11-2, 11-4.

"Paul has gotten the better of me in the most recent matches we’ve had against each other," Farag conceded.

"He’s made me a better player by exploiting my weaknesses, I’ve had to go back to the drawing board."

There are two Egyptians in the remaining quarter-finals to be played.

PSA world number seven Tarek Momen faces England’s PSA world number three Mohamed ElShorbagy and Karim Abdel Gawed takes on world number two Diego Elias of Peru.

The remaining quarter-finals are scheduled for tomorrow, while the first of the semi finals are scheduled for Wednesday (May 10).