Rayo Vallecano have had a rough go of it this season as they are barely treading water above the relegation zone right now. While they haven't been great, they just beat Atletico Madrid 3-0 entering this matchday and looked leagues above them somehow. That little bit of confidence, combined with with a desperate need for points means they'll be pressing. Real Betis are one of the best attacks in LaLiga, and I'm expecting BTTS and the over to hit once more.