Rules Analysis
If the disc is on the ground, whether in- or out-of-bounds, any member of the team becoming offense may take possession of it.
If possession is gained at the spot where the disc is in play, the thrower must establish a pivot at the spot of the disc.
The thrower should pick up the disc and place the pivot at the spot of the disc.
If an in-bounds disc comes to rest on the central zone, a member of the team becoming offense must pick up the disc and establish a pivot within ten seconds after it comes to rest.
The 70 x 40 yard box
After ten seconds elapse, a defensive player within ten feet of the disc may announce "disc in," and then initiate and continue the stall count, but only if a defensive player has given audible warnings of ten and five seconds (the pre-stall).
If the disc is out-of-bounds (10.E) or comes to rest in the end zone, a member of the team becoming offense must put the disc into play within twenty seconds after it comes to rest.
For an out-of bounds disc that has come to rest on the central zone, the team becoming offense will have twenty seconds to put it into play.
If an offensive player unnecessarily delays putting the disc into play in violation of rule 20.B, a defender within ten feet of the spot the disc is to be put into play may issue a delay of game warning instead of calling a violation, by announcing "delay of game" and counting down from three to zero at intervals of at least one second to provide an opportunity for the offensive player to react to the warning. Play then continues as follows: