An injury to Artiz Aduriz could stunt the team offensively. Kike Sola has been extremely underwhelming.
How will the club fare without Nemanja Matic? An Enzo Perez injury could really shake things up.
The home form cannot afford to nose-dive, as their away form hasn't been strong. Near-perfection is required to land in second.
Anything that rocks the ship is bad news for Roberto Martinez. Everything is going so well.
Giuseppe Rossi has already gone down, and Vincenzo Montella's side has recovered. Could they do without Borja Valero, though?
If nothing changes (from a managerial standpoint), Jackson Martinez will not be able to keep them afloat in the title-race single-handedly.
For Real Sociedad, see Everton: everything is going swimmingly at the moment, so they'll be hoping for a strong run-in.
Their academy-bred Portuguese midfield trio getting torn apart by suitors would give socios nightmares.
The Tim Sherwood express runs out of steam, Emmanuel Adebayor loses interest and Erik Lamela never, ever comes good.
Mateo Musacchio decides to move one window too early.