Answer
Wilson's most severe suspension occurred on October 3, 2018, during a preseason game against the St. Louis Blues. In the first period, Wilson delivered a blindside hit to Blues defenseman Oskar Sundqvist, sending him headfirst into the boards. Sundqvist was hospitalized with a concussion and a broken jaw. Wilson was suspended for 20 games, the longest suspension ever handed down to an NHL player for an on-ice incident.