James Willstrop, world number 31, dropped to his lowest ranking since November 2003 earlier this month ©Getty Images

James Willstrop rolled back the years to cause a huge upset against world number five Marwan ElShorbagy in the third round of the US Open in Philadelphia.

The 38-year-old Englishman, a former world number one, closed out an unexpected 9-11, 11-5, 11-4, 11-8 victory in 47 minutes to set up a tie with another Egyptian, Mohamed Abouelghar, for a place in the quarter-finals.

ElShorbagy wasn’t the only seeded player to bow out of the men’s event in round two as his compatriot Karim Abdel Gawad, the sixth seed, suffered a straight-games defeat to world number nine Joel Makin.

Wale's Makin will take on France's Sébastien Bonmalais next after he took the scalp of world number 20 Omar Mosaad from Egypt to reach the third round of a Professional Squash Association World Tour Platinum event for the first time in his career.

Defending champion Ali Farag of Egypt got his tournament under way with a straight-games win against India’s Saurav Ghosal, and he will play countryman Mazen Hesham for a place in the last eight.

Second seed Mohamed ElShorbagy was also in action as he defeated Malaysia's Eain Yow Ng to set up an all-Egyptian clash with Youssef Soliman in the next round.

In the women's draw, Sarah-Jane Perry of England completed a sensational comeback against Egypt's world number 33 Zeina Mickawy.

The world number seven recovered from a tw-game deficit, defending four match points, to win 12-14, 8-11, 12-10, 12-10, 11-9.

She will face Wales' Emily Whitlock in the third round.

Reigning champion Nouran Gohar comfortably beat American Sabrina Sobhy 3-0 and will face England's Alison Waters tomorrow.