ElShorbagy said on Twitter that he was happy to win his 39th title and the second this season in San Francisco.
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Seven of the world’s top ranking male squash players are Egyptian
The world’s number four player, Ashour, beat the world number one, Elshorbagy, in a match that lasted 90 minutes
Elshorbagy booked his place in the final with a 3-2 win over World No.1 Nick Matthew, his second consecutive win over the Englishman having beaten him in the 2013 Qatar Classic final, in a tense and hard-fought battle full of sublime squash action.
Elshorbagy went into the final 3-9 down to Darwish on a career head-to-head tally over the past four years – but had only dropped a single game in his three wins over the former world No 1 from Cairo.
Favourite Ali Fathi will be trying to become the first Egyptian champion of the long-established event after seeing off Canadian hope Dane Sharp, the fourth seed from Toronto, 11-8, 11-9, 11-4 in 37 minutes.