One reason for Colorado's disappointing season was the absence of their top defenseman for 36 games after he broke his fibula against the Stars on Dec. 3. When in the lineup, Johnson handles the tough minutes: killing penalties, playing in the defensive zone, and taking on top opponents.
There are modern metrics to measure each of these assignments. Over the past three seasons, Johnson's average of 2:50 of shorthanded ice time per game ranked 11th among the 281 NHL defensemen who played at least 40 games over that time. Over that same span, he started 1,077 of his shifts in the defensive zone and 843 in the offensive zone, for a zone-start percentage of 43.91, 24th-lowest.
In terms of taking on top opponents, the forward Johnson faced most frequently on each team tended to be its highest-scoring player last season, including Vladimir Tarasenko (34:30) for the St. Louis Blues, Jamie Benn (24:51) and Tyler Seguin (23:58) for the Stars, Patrick Kane (21:49) for the Chicago Blackhawks, Connor McDavid (21:42) for the Edmonton Oilers, and Patrik Laine (20:25) for the Winnipeg Jets, according to the data at Natural Stat Trick.