article_snippet.sent: Mercedes team-mate Nico Rosberg first place .
article_snippet.sent: It allowed Mercedes team-mate Nico Rosberg to lead the way with a lap of one minute 34.647secs, with Mercedes' nearest rivals again Raikkonen and Sebastian Vettel, but half a second back.
article_snippet.sent: Behind the leading quartet came Williams' Valtteri Bottas followed by Daniel Ricciardo in Williams' Red Bull and Lotus of Pastor Maldonado, all within a second of Rosberg.
article_snippet.sent: Sauber's Felipe Nasr, Daniil Kvyat in Williams' Red Bull and the Williams of Felipe Massa completed the top 10, with the latter 1.237secs off the pace.
article_snippet.sent: Sebastian Vettel had issues throughout the day, eventually finishing the second practice in fourth place .
article_snippet.sent: Sebastian Vettel finished fourth, behind Rosberg, Mercedes team-mate Nico Rosberg and third-placed Kimi Raikkonen in Bahrain .
article_snippet.sent: McLaren's Fernando Alonso was 1.5secs back in 12th, whilst for team-mate Jenson Button
article_snippet.sent: team-mate Jenson Button eventually completed 15 laps, finishing down in 19th place between Manor duo Will Stevens, who finished 4.484secs back, and team-mate Roberto Merhi.