Example. Line was under 45 in the nfl game tonight look now 43 1/2. Those 2 numbers obviously are not the same. Bears at +3 1/2. Don't look now man. You can find Vikings-3 or even -2 1/2. Obviously you may see the point I'm getting to. Example. Yesterday Bills was at + 3 1/2 which dropped to key number 3. Yep you guessed it. Game lands on 3. Reading the lines is what masters this. Don't get caught on that 3