NFL moves extra points back to 15-yard line, two-point conversion rules largely unchanged
NFL Extra Points Credit Card Review
NFL kickers react to league's new extra point guidelines
NFL Extra Points Credit Card Partners With Pat Tillman Foundation Ahead Of Super Bowl 50 Ticket Giveaway
Chart Shows Why the NFL May Eliminate the Extra Point
The N.F.L. Extra Point Has Changed, but Deuces Still Aren't Wild - The New York Times
Patriots' Stephen Gostkowski misses extra point after making 523 in a row
Conversion (gridiron football) - Wikipedia
Brett Maher misses five straight XPs over two games
It was about time for the NFL to give extra-point tries the boot - Los Angeles Times