CHICAGO — It was one of the most memorable debuts in the history of the NHL. Auston Matthews arrived in Ottawa as a 19-year-old rookie in 2016 and put on an absolute show in scoring four goals in his first game. He got to the front of the net, using his strength to shield through defenders for the first one. He skated through about half the Senators roster to get the second one. He one-timed the third. The fourth was a 2-on-1 he finished. It was a hockey clinic to announce his arrival to the league.



And right on cue, the league’s drug testers arrived the next day.



Matthews was at practice with his Toronto teammates when they showed up to give him another welcome to the NHL. He was part of the randomly selected no-notice drug testing that happens during the season under the NHL’s drug policy.



Of course, his teammates let him hear it.



“All the boys were giving me a hard time, the next day at practice, I didn’t know what...