After a quick look I didn't see the existence of such thread, so thought I'd create one.

How will the team-mate battles end this year? In whose favour (or in a tie), and by how big a margin?

Hamilton v Rosberg
Ricciardo v Kvyat
Bottas v Massa
Vettel v Räikkönen
Alonso v Button
Hülkenberg v Pérez
Verstappen v Sainz jr
Grosjean v Maldonado
Nasr v Ericsson
Stevens (???) v Mr X