Practice One - Rosberg and Mercedes on top in Monaco

Monaco resident Nico Rosberg ruled Thursday morning's opening free practice session on the streets of Monte Carlo, pipping Ferrari's Fernando Alonso by just 0.087s as one second covered the first eight cars. The German lapped his Mercedes in 1m 16.195s, which resisted the Spaniard's best effort of 1m 16.282s. Right at the end Romain Grosjean pushed himself up to third on 1m 16.380s for Lotus

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