Kerfoot started to make positive strides once he learned how to be a PKer and a true Swiss army knife player.
(As an aside, the one true thing I will give Keefe credit for is turning players into penalty killers. There weren't enough defensive players acquired for Babcock, but it just seemed like he could only trust Hyman and maybe Marner and wouldn't give anyone else a shot. And that penalty kill was why we lost to Boston in 2019. Keefe turned guys like Kerfoot, Mikheyev and Engvall into penalty killers which was a real positive for this team).
But anyway back on track. Kerfoot was making positive strides until the Tampa series, where he really hurt us in Game 6, also made an absolute boneheaded play on the 3-1 goal in Game 3, but it wasn't as magnified since we won the game.
He's since carried it over to this year and has been a non-factor. It's not good enough. As someone you won't re-sign anyway, i though it would have been smart to swap him in the offseason with a team looking for some more skill. With the hopes to replace him with someone with a little more overall jam.