Analyze This: Jonathan Drouin, Alex Galchenyuk hit same wall at centre

Early this season, I noted that, in Jonathan Drouin, the Canadiens might have found their coveted No. 1 centre. The sample size was limited but, by early November, Drouin was showing improvements in every offensive category. If he could manage to sustain that pace, he was heading toward a very successful season.
However, he hasn’t maintained that pace. In fact, he has experienced a major regression in goals, primary assists, shot control and other metrics since November (see charts be