@cballx26 rule only applies in the final two minutes of a half (and on 4th down). If the ball IS recovered by another offensive player, it is dead at the spot of the fumble.
[and the booth buzzed for a review of the play which showed that the player was down before fumbling anyway]
@Mykbibby game clock keeps running when a player is tackled in bounds, and the game ends when the lock hits zero (though if a play started before the clock went to 0 it can be finished)
you put FOUL balls instead of FOUR balls