He too has been better than in previous years. I just really see Sergy as the weakest link and it might not be a bad idea to let him know it in a tangible way.
Btw, both Coburn and Girardi being better is a direct result of McD's healthy presence IMO.
I'd rate our D-men like this:
McDaddy
Heddy
(first two interchangeable depending on the situation)
Stralman (before he got hurt)
Coburn
Girardi
Sergachev
Cernak
Serg isn't necessarily unreliable defensively, his offensive mindset just hasn't been there this year. He just needs a goal. I find myself complaining about stupid things Hedman does more than Serg.
Cernak has a lot of potential but still needs some time in the minors. He's about where I'd put Sergachev at the start of last year. Without question I have found myself irritated at multiple things Cernak has done, but it's not that I blame him either - he's a rookie.