I am going to bet on Ferrari to win this first race as it looks like they in overall performance,meaning during a lot of laps have shown the most consistency in speed.The track of Bahrain is wide enough to give the possibility for many overtakes in different parts of the track.I see also Redbull maybe is trying to hide their true power but we will have all our doubts clear tomorrow during the qualification session,there the cars will show their true faces.Mercedes right now looks out from the fight to win any race in the first part of the Championship unless they are lying really big which I doubt.
The rumor regarding Ferrari is that they were with a huge saving on the last test, tomorrow will be the answer but I think it will be a thing between Ferrari and RBR at least for the 1st half of the season?
Expecting 3 GP with only these 2 teams.