We already looked at the offensive side of things here and now it's the defense.
I'm taking a look at the depth chart at this time last year and comparing it to the depth chart the Kansas City Chiefs issued for the Monday Night Football game against the San Diego Chargers.
Here are the three changes from 2009's first depth chart to 2010's first depth chart:
NT Tank Tyler (Ron Edwards): I'm not sure that this is an upgrade. Maybe Edwards is currently better but Tyler at least represented youth and hope. If this is an upgrade, it's not a big one.
ILBs Demorrio Williams/Corey Mays (Derrick Johnson/Jovan Belcher): I feel that this is an upgrade overall. DJ seemed to make plays when he was in the game last year and Williams didn't have a sack or an interception last year so I think DJ gives the Chiefs a better shot of making big plays.
SS Mike Brown (Eric Berry): Berry hasn't played a regular season game yet and I think many agree that he's a somewhat significant upgrade over Brown.
I'm not sure that the defense got a whole lot better not counting development of guys already in place, other than safety. Edwards and DJ/Belcher could be considered upgrades but not big enough that I think it's a significant difference.