Three is the ultimate key number in NFL handicapping because it ... back the extra-point distance in 2015 to encourage 2-point conversions. Since that rule change, 14.8% of games have been decided ...

NFL coaches make tough fourth-down and 2-point conversion decisions on every ... Well, it's complicated. Is there a cheat sheet that could help show the correct decisions? No and yes.

Curious about a fourth-down or 2-point conversion decision? ESPN's recommendation model can help.