Your rule(s) are as follows for defensive teams:
fleaflicker.com
Defense
4 points for every Interception TM
2 points for every Sack TM
4 points for every Fumble Recovered TM
4 points for every Safety TM
4 points for every Defensive TD TM
-10 points for every 20 Offensive Points Allowed (FG, Pass TD, Rush TD) (-0.5 per) TM
This means that -10 is applied and taken off for every 20 OPA. The Patriots allowed 0, so they correctly had no points applied.
I hate when I ask stupid questions. :(
I forgot that it doesn't show anything when nothing is applied.
Thanks for the help.