The stats don't back up the view that Kuzmenko and Mantha are horrible defensively. Sharangovich slid from his Jersey stint, but still wasn't bad.
Kuzmenko - CF% (even strength) 54.4, oZs%, 66.8 (ok he's sheltered a lot), Takeaways 27, Giveaways 24 (ratio 1.12:1)
Mantha - CF% 51.8, oZS% 49.3, Takeaways 23, Giveaways 22 (ratio 1.04:1)
Sharangovich - CF% 50.0, oZs% 59.5, Takeaways 35, Giveaways 39 (ratio 1:1.14)
I always use the takeaway/giveaway measure as a tell-tale sign of the effectiveness of a player and it generally holds true. If the ratio is negative they're coughing the puck up too much. If the ratio is positive, they're checking and getting the puck.
For comparisons sake,
Backlund - CF% 53.5, oZs% 37.5, Takeaways 61, Giveaways 56 (ratio 1.089:1)
A simple view perhaps, but it works for me.
As far as Kadri and Backs taking a step back goes, perhaps. It is difficult to attribute that to a possible down year or to the aging process. Given the way professional athletes train and take care of their bodies these days I don't think it necessarily follows that at age 33 or 35 they're done.
I'm not expecting anything from Lombo other than grit, a speedy forecheck, and leadership. If he happens to light a fire on the 4 line and they rack up some points, stir the pot, and be responsible defensively, it is a huge win.
Lomberg - CF% 50.0, oZs% 46.2, Takeaways 14, Giveaways 14 (ratio 1:1)
Go Flames go!