Ismaily overtook Ahly on top of the Egyptian Premier League after coming from behind to earn a 3-2 win over third-bottom Nasr on Tuesday to give new coach Abou Taleb El-Issawi a winning start.
The Dervishes, playing their first game following the sudden departure of French coach Sebastien Desabre last month, fell behind to a surprise Nasr opener five minutes before the break.
Mohamed Said swept home after rounding off a neatly-worked counter attack to give Nasr a halftime lead.
However, Ismaily roared back in the second half with three goals.
A long-range shot from Mohamed Aboul-Magd struck the keeper's hands and went in on 55 minutes and Colombian striker Diego Calderon put Ismaily ahead two minutes later to take his tally for the season to 10 goals.
He rose unmarked at the far post to meet an inviting cross with a bullet header that went past the keeper.
Skipper Hosni Abd-Rabou converted a penalty to make it 3-1 in the 76th minute but Ismaily survived some nervy moments after Nasr narrowed the gap via an own goal from Mohamed Hashem, who comically converted a cross into his own net with three minutes remaining.
Ismaily, the main challengers of Ahly for the coveted league title, are on top with 40 points, two ahead of the Red Devils who have a game in hand.
Ahly briefly moved top for the first time this season when they crushed arch rivals Zamalek 3-0 in the Cairo derby on Monday.
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