A simple number based on an arbitrarily derived formula to measure the league's hotter and colder teams. Wins in your last 10 games plus the length of your current winning streak (or minus the length of your current losing streak). That way, the heat on a hot team doesn't completely dissipate if they lose a single game, but it's a setback momentum wise. And if you're red-hot, but lose two in a row, it can take you back to square one, momentum-wise. I think that's a somewhat representative indication of how momentum works, or is perceived, anyhow.