Philly is a misdirection baseline out of bounds play that can be used to get a quick basket against a man to man defense.
We start out with 4 players across the baseline.
Since 5 is setting a backscreen for 4 with the goal of getting 4 a layup on the weakside block, we try to put our best shooter (2) in the weakside corner. 2 should try to sell himself as a shooting threat in order to keep his defender from stepping in and helping in the basket area.
4 puts his outside hand up and tries to sell his defender on the idea that we’re looking to lob the ball direrctly to him. 4 also takes a step up the lane to set up 5′s backscreen and give 5 room to step to the ball after the screeen. 4 is facing the sideline with his left hand up in this depiction.
As 4 steps up the lane, 5 comes across the lane and sets a backscreen on 4′s defender.
4 executes a quick reverse pivot and comes off the screen to the weakside. 3′s first option is the pass to 4 coming off the screen.
5 steps to the ball after screening. 3′s second option is the pass to 5.