Against Cardiff Tonev seemed to alternate between playing left wing back, making us a 3-5-2, or floating in midfield, where we then looked more like a 4-3-1-2. I think it'll be similar to day. When Tonev hugged the touchline Baker/Clark seemed to tuck in and make it 3 centerhalves. But depending on who out of Baker/Clark play on the left hand side, neither is going to get forward much if they're in the fullback position.
Honestly, that's such an ordinary, mundane looking side. The only thing I think this will effectively mean is that the game is going to be pretty dour. I think Lamberts put out a side to try and physically match the Baggies in a tough Derby game. We should be fairly tight, but I'm guessing we're banking on some Benteke magic to nick the game.