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==== Defending ====
Acquiring the roof is crucial to attempting any kind of defense. If your team cannot get on the roof in time, it's simply wiser to attempt a third point defense instead. The sentry should be positioned on the ledge of the roof, to deny all players trying to push the cart.
Once again, it is very key for the Pyro to stay up at all times, as he excels while he has a height advantage over the attacking combo. Another important aspect of this point is making sure the flank area is being watched at all times, as the attackers might attempt to kill the Medic by bombing.
If the enemy team used their ÜberCharge, and the defending Medic is on about 85-90%, he can retreat through the back stairs and then towards the cart, just to double-back and go up again when the enemy über fades, cleaning up all the attackers and perhaps reacquiring the roof.