Maybe. He was also facing his strongest opponent so far. He was up and down, and I saw a lot of stuff I was really impressed by. Besides, I didn't think any of our defensemen had great games, relatively speaking. Even Hedman made some uncharacteristic mistakes. Considering that at 19 and in his fourth (?) NHL game Sergachev was arguably playing hockey as fast as it will be played at any point in the regular season, I thought he held his own. Still think it makes more sense to go with him over KK, but I would give KK a few games to prove that last night wasn't a fluke.
I think Koekkoek has at least pulled even. I can't think of a mistake he made, while this was the first game where Sergachev consistently stood out in a bad way. I mean, some guys made mistakes, but Sergachev had a rough game overall. It was bound to happen. Not the end of the world, nor the end of his opportunity.
Koekkoek finally took some initiative though and looked pretty good, even when he wasn't scoring goals. Maybe he just clicks against the Penguins.