While reading through the new mechanics manuals, I found a rule change that I have not seen presented or talked about yet. It was tucked away in the 6 player section. In 1A (six player) football, the 4th down fumble rule does not apply until AFTER a legal exchange or the ball has crossed the neutral zone.
4th and 5 at A-30. A1 takes the snap and attempts to hand the ball to A2. During the attempted handoff, the ball comes loose. A2 recovers the ball at the A-25 and runs to the A-36.
In 11 player football, the ball is dead at the A-25 when recovered by A2 and it would be Team B's ball since Team A did not reach the line to gain. In 6 player football, the ball remains alive, A2's advance is allowed, and Team A gets a new series at the A-36. Because there had not been a legal exchange nor had the ball crossed the neutral zone, the 4th down fumble rule does not apply.
4th and 5 at the A-30. A1 takes the snap and hands the ball to A2. A2 is hit and fumbles the ball. A1 recovers the ball at the A-25 and runs to the A-36.
In both 6 and 11 player football, the ball is dead when recovered by A1. It will be Team B's ball at the A-25 since Team A did not reach the line to gain.