Looks like Mercedes will dominate in Bahrain! I mean the engine, not the team itself. It's hard to say what will happen in the qualify but I think McLaren and Mercedes GP will take the first two rows. Red Bull had some problems at least in the practice session and I think Ferrari wasn't that aggressive as they could've. There's was just something that didn't work well with them.
Seriously, I don't understand what's going on with HRT. Chandhok hasn't driven a single lap and I think Senna broke his car in the end of the second practice session, I wonder if they have any spare parts yet. I know "bla-bla-bla it's a new team", but they have some major problems anyway when comparing to f.e. Lotus. Virgin is also struggling a little bit.
Anyway, I'm rooting for Rosberg. He has driven brilliantly.
My predictions for qualify:
1. Hamilton
2. Rosberg
3. Button
4. Schumacher