play inside of the two-minute warning). This change was prompted after the 2012 Thanksgiving Day game when Detroit Lions' head coach Jim Schwartz threw a challenge flag on a play where replay clearly showed Houston Texans' running back Justin Forsett's knee touched the ground, but was able to get up and score a touchdown. Due to the way the rule was written at the time the penalty for the errant challenge prevented the play from being reviewed. Under the revised rule teams will be charged a time-out (or an unsportsmanlike conduct penalty if the team is out of time-outs) when a coach throws a challenge flag on a booth-reviewable play, but the play will still be reviewed if the replay booth believes a review is necessary. Jimmy Graham rule: Effective the 2014 NFL season, the action of "dunking" the football through the goal post/crossbar as a prop in touchdown celebrations is now considered an unsportsmanlike conduct penalty (15 yards). This rule was in response to Graham's tendency to dunk the football after scores while playing for the New Orleans Saints. One of his dunks during the Saints' 2013 Week 12 Thursday Night Football game against the Atlanta Falcons bent the goal posts so much that the game was delayed several minutes in order for the stadium crew to make adjustments. Additionally, the league extended the height of the goal posts from 30 to 35 feet, adding extra weight and therefore increasing the chances that it could collapse. Justin Tucker rule: First named during the controversial Sunday Night Football game between the Baltimore Ravens and New England Patriots in Week 3 of the 2012 season (one of the most memorable games that took place during the 2012 NFL referee lockout), commonly referred to simply as the "Tucker Rule," and named after Baltimore kicker Justin Tucker, this rule states that if the ball is kicked directly over one of the posts during a field goal attempt, then the field goal is deemed good. This is, indeed, what happened during the game, as Tucker made a successful kick like this on the final play of the game. Ken Stabler rule: On fourth down at any time in the game or any down in the final two minutes of a half, if a player fumbles forward, only the fumbling player can recover and/or advance the ball. If that player's teammate recovers the ball, it