The keys to me (IMHO as a Bucs fan).
3. Stupid penalties at key moments.
Always a killer. Early on, it was hurting the Colts. At the end, the Bucs.
2. Tim Wonsley subbing for Brian Kelly
Brian Kelly is a very good CB. Tim did a good impersonation of toast and Marvin Harrison was the oven.
1. Bucs' D-line getting tired at the end.
The key for the Bucs' Def model is that the front 4 have to get pressure on the QB without the need for a blitz. Plus, Peyton Manning is a QB that NEEDS to be pressured to be affected. Peyton Manning + time in pocket = bad things for a defense.
It didn't help that 2 of our RB's were hurt. If Pittman was still in, we might've been able to run out the clock. However, that doesn't excuse the complete meltdown that occurred.