(AGI) Rome, Sept 19 - Fernando Alonso was quickest at the endof the first practice session of the Singapore Grand Prix onFriday. The Spanish Ferrari driver lapped in 1:49:056, justover a tenth of a second faster than the two Mercedes drivers,Lewis Hamilton and Nico Rosberg. Sebastian Vettel was fourth in1:49:874, followed by his Red Bull teammate Daniel Ricciardo.Kimi Raikkonen in the other Ferrari, came seventh in 1:50:783,1.7 seconds behind Alonso. (AGI) . .