Nico Rosberg was the fastest man on track at the end of the second free practice session for the Bahrain Grand Prix.
The Mercedes driver topped the timesheets during the morning session and he made it two from two as he once again beat his Mercedes team-mate Lewis Hamilton into second spot.
Rosberg clocked 1:31.001 to finish 0.241s ahead of Hamilton with Jenson Button springing a surprise as he brought his McLaren home in third.
Toro Rosso's Max Verstappen was fourth ahead of the Ferrari pair of Kimi Raikkonen and Sebastian Vettel, although the latter's session came to a premature end when he was forced to stop out on track after losing his drive.
Daniil Kvyat was seventh for red Bull with his team-mate Daniel Ricciardo ninth behind the Williams of Valtteri Bottas. Felipe Massa completed the top ten in the second Williams.
Bahrain Grand Prix - Practice 2 results;
Pos Driver Car Time Gap
1 Nico Rosberg Mercedes 1m31.001s
2 Lewis Hamilton Mercedes 1m31.242s 0.241s
3 Jenson Button McLaren/Honda 1m32.281s 1.280s
4 Max Verstappen Toro Rosso/Ferrari 1m32.406s 1.405s
5 Kimi Raikkonen Ferrari 1m32.452s 1.451s
6 Sebastian Vettel Ferrari 1m32.650s 1.649s
7 Daniil Kvyat Red Bull/TAG Heuer 1m32.703s 1.702s
8 Valtteri Bottas Williams/Mercedes 1m32.792s 1.791s
9 Daniel Ricciardo Red Bull/TAG Heuer 1m32.870s 1.869s
10 Felipe Massa Williams/Mercedes 1m32.873s 1.872s
11 Stoffel Vandoorne McLaren/Honda 1m32.999s 1.998s
12 Esteban Gutierrez Haas/Ferrari 1m33.129s 2.128s
13 Carlos Sainz Toro Rosso/Ferrari 1m33.177s 2.176s
14 Romain Grosjean Haas/Ferrari 1m33.384s 2.383s
15 Sergio Perez Force India/Mercedes 1m33.406s 2.405s
16 Kevin Magnussen Renault 1m33.447s 2.446s
17 Nico Hulkenberg Force India/Mercedes 1m33.570s 2.569s
18 Jolyon Palmer Renault 1m33.640s 2.639s
19 Pascal Wehrlein Manor/Mercedes 1m33.953s 2.952s
20 Marcus Ericsson Sauber/Ferrari 1m34.224s 3.223s
21 Felipe Nasr Sauber/Ferrari 1m34.477s 3.476s
22 Rio Haryanto Manor/Mercedes 1m34.562s 3.561s