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				 After champions Mercedes dominated both of the Friday 
				sessions, Ferrari showed their aerodynamic updates were also 
				working. 
				 
				Raikkonen lapped the Circuit de Catalunya with a best time of 
				one minute 20.214 seconds, 0.242 quicker than four times world 
				champion Vettel whose car stopped at the pit lane exit in the 
				closing minutes. 
				 
				"No real engine issue, but we are replacing some parts 
				precautionally," Ferrari said on Twitter. 
				 
				Mercedes' triple champion Lewis Hamilton was third on the 
				timesheets, 0.381 slower than Raikkonen's pace although he made 
				a mistake on his fastest lap. Finland's Valtteri Bottas was 
				fourth after Mercedes resolved problems detected overnight with 
				the car. 
				 
				That led to an engine change, with the Finn -- winner of the 
				previous race in Russia -- late getting out on track as 
				mechanics finished off the work. 
				 
				Red Bull's Dutch teenager Max Verstappen, winner in Spain last 
				year on his team debut and with plenty of fans around the 
				circuit, was fifth fastest ahead of Australian team mate Daniel 
				Ricciardo. 
				 
				Home hero Fernando Alonso had a better start to the day at 
				McLaren than Friday had suggested would be the case after his 
				car broke down at the start of the weekend's opening session. 
				 
				The Spaniard was 10th on the timesheets, 1.879 seconds off the 
				pace and just behind compatriot Carlos Sainz in the Toro Rosso. 
				 
				(Reporting by Alan Baldwin, editing by Toby Davis) 
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