The Egyptian rising star showed her intent from the start as she won the opening game at Drexel University Daskalakis Athletic Center, Philadelphia.

New Zealand's King looked to be back in control when she took the next two games, only for Elaraby to raise her level once more at the PSA World Tour Platinum event.

World number 31 Elaraby survived two match balls before winning the fourth game and closing out a superb 11-7, 7-11, 2-11, 12-10, 11-8 triumph.

"I'm out of words," Elaraby said.

"I'm really happy with how I played and how I managed to go through the match. 

"I can’t believe it. 

"I feel as though what I was working on in the off-season has been paying off now."

World number three Nour El Tayeb awaits Elaraby in the last eight after she defeated compatriot and reigning world junior champion Hania El Hammamy 11-7, 11-7, 11-8.

Defending champion Raneem El Welily needed just 21 minutes to dispatch fellow Egyptian Yathreb Adel 11-3, 11-5, 11-4.

She will take on England's Sarah-Jane Perry next after she won 10-12, 11-9, 11-6, 14-12 against Malaysian Sivasangari Subramaniam.

In the men's draw, top seed Ali Farag from Egypt cruised to an 11-3, 11-9, 11-8 victory over Adrian Waller of England.

He will take on Colombian Miguel Rodriguez in the quarter-finals after he defeated Ryan Cuskelly of Australia 13-11, 11-9, 11-7.

World number seven Diego Elias from Peru progressed thanks to an 11-5, 11-9, 11-8 win over Welshman Joel Makin.

Fourth seed Karim Abdel Gawad of Egypt will play Elias in the last eight.

Gawad won 11-5, 16-14, 11-7 against Frenchman Grégoire Marche.

The third round concludes tomorrow, when US number one Amanda Sobhy and defending men's champion Mohamed El Shorbagy target quarter-final berths.