on October 3. He remained a consistent member of the Penguins lineup before being diagnosed with a concussion following their 2019 NHL Stadium Series matchup against the Flyers. He returned to the lineup after missing three games. As Letang, Olli Määttä, and Chad Ruhwedel remained out due to injuries, Dumoulin's time on ice increased and he logged over 20 minutes of ice time during a game against the Buffalo Sabres. Although he would miss the last three games of the regular season with a lower-body injury, Dumoulin recorded a career high 23 points through 76 games. Upon finishing his career-best season, Dumoulin experienced an injury-ridden 2019–20 season. At the start of the season, he missed two games due to a lower-body injury after being a late scratch for their 3-0 loss to the Vegas Golden Knights. He returned to the Penguins lineup shortly thereafter and tallied one goal and six assists in 23 games before undergoing ankle surgery. Dumoulin subsequently missed 33 games before returning to Penguins practice on February 25, 2020. After spending the majority of the previous season battling injuries, Dumoulin returned to the Penguins lineup to begin the 2020–21 season. Although he missed 15 games with a lower-body injury, Dumoulin improved the Penguins blueline who went 29-9-3 with him in the lineup. Dumoulin tallied four goals and 14 points in 41 games to rank fifth amongst goals scored by defencemen and fifth-most points. He finished the shortened 2020–21 season logging an average of 22 minutes, 21 seconds per game, including a team-best 2:45 on the penalty kill. Head coach Mike Sullivan praised Dumoulin's defensive abilities calling him "not just an ‘off-the-glass-and-out’ guy." Prior to the start of the 2021–22 season, Dumoulin trained with John Marino in Boston. Together, they would skate before working out at the home gym in Dumoulin's garage in Charlestown. Once the season began, Dumoulin played eight games before being placed on the NHL's COVID-19 protocol list. Playing style As a youth, Dumoulin was described by Monarchs head coach Sean Tremblay as being similar to Ryan Whitney. He also praised Dumoulin's size and stick use. Upon signing an entry-level contract with the Hurricanes, Ron Francis described Dumoulin as a "big, puck-moving defenseman." Later, Dumoulin described himself as being "solid in my defensive zone." He credited much of his improvement since turning professional to former Wilkes-Barre/Scranton head coach John Hynes and assistant Alain Nasreddine. International