Basketball courtyards are surrounded by chain link fences, but the doors are actually (locked) metal doors. That means they can’t be pried, nor bashed, and can only be opened by using lockpick kits.
This limits your strategy there, as the only thing you can do to kill those trapped inside in melee is to wait for them to break one of the walls or climb the fence yourself and fight them inside, potentially being surrounded in the process.
And, let’s be honest, using metal doors for that place doesn’t make much sense to begin with.
So, what about a new (bashable) chain link door?