True or False: Teams that release or trade a player are still responsible for the salary cap change that's been prorated.

When a team releases or trades a player, the team remains responsible for any prorated signing bonus amounts that are included in the player's contract. This is because the salary cap rules dictate that signing bonuses are prorated over the length of the contract, and if a player is released or traded before their contract ends, the remaining prorated amount accelerates and counts against the team's salary cap in the current year.

For instance, if a player received a signing bonus that was prorated over multiple seasons and is released before the contract's duration is complete, the remaining portion of that bonus is immediately charged to the salary cap. This mechanism is intended to deter teams from easily releasing players to free up cap space, as they cannot simply avoid the financial implications of their contractual commitments.

Therefore, the statement is true, reflecting the responsibility that teams have for the salary cap implications related to any prorated amounts when a player is either released or traded.