The ruling on the field is a complete pass.
A player who makes a catch may advance the ball. A forward pass is complete (by the offense) or intercepted (by the defense) in the field of play, at the sideline, or in the end zone if a player, who is inbounds:
The ruling on the field is an incomplete pass.
An official shall declare the ball dead and the down ended:
The ruling on the field is a first down.
Item 2. Runner Out of Bounds. If the ball is in player possession when that player goes out of bounds, the out-of-bounds spot is the forward point of the ball when the ball crosses the side line, or, if the ball does not cross the sideline, the forward point of the ball at the instant the player is out of bounds.