Ritchie and Bjork both played under 10 minutes, meaning Coyle is reduced to a 4th line center at even strength with them on his wings.
Even with special teams play, Coyle played less than Kuraly and Nordstrom.
There is only so much ice time as well, and the 4th line is our second shut down defense line. With the second line playing so well of late, someone isn't going to get the time.