Amateur
MacDermid first played junior hockey with the Owen Sound Greys in the Greater Ontario Junior Hockey League. [1] He was selected in seventh round, 139th overall, as a defenceman by the Owen Sound Attack of the Ontario Hockey League (OHL) in the 2010 OHL Priority Draft. [2] He made his debut with the Attack in the 2011–12 season, in which he appeared in nine games, recording two assists for two points. He played his first full season in 2012–13 season, playing in 65 games, scoring one goal and seven assists for eight points. [1] The Attack made the playoffs and advanced to the conference semifinals where they were eliminated by the Plymouth Whalers. [3] In 12 playoff games, MacDermid added three assists. [1]
He began the 2013–14 season with Owen Sound, making 38 appearances, scoring five goals and 16 points. [1] On January 9, 2014, he was traded to the Erie Otters in exchange for draft picks. [4] He finished the season in Erie, scoring two goals and three points as the team qualified for the playoffs. [1] The team advanced to the conference finals where they were knocked out of contention by the Guelph Storm. [5] He returned to Erie for the 2014–15 season and in 61 games, he tallied eight goals and 40 points. The Otters made the playoffs and advanced to the championship final where they were defeated by the Oshawa Generals. [6] In 12 playoff games he marked five assists. [1]
Professional
After going undrafted by National Hockey League (NHL) teams in the NHL entry draft, MacDermid signed as a free agent to a three-year, entry-level contract with the Los Angeles Kings on September 13, 2012. [7] He made his professional debut with the Kings' American Hockey League (AHL) affiliate, the Ontario Reign, in the 2015–16 season. He received a 12-game suspension from the AHL on December 29, 2015 for an illegal check to the head of San Diego Gulls forward Matt Bailey. [8] In 56 games, he recorded four goals and 16 points. [1] Ontario finished atop the Pacific Division and in the playoffs, made the semifinals where they were defeated by the eventual champions, the Lake Erie Monsters. In 13 playoff games, MacDermid scored two goals and three points. [1] In his second season with the Reign in 2016–17 season, he put up six goals and 20 points. [1] The Reign finished third in the division and made the playoffs again but were eliminated in the first round by the San Diego Gulls. In five playoff games, he went scoreless. [1]
After two seasons as a regular on the blue line with the Reign and having made positive progress at the conclusion of his rookie contract, MacDermid was re-signed to a one-year, two-way contract extension on July 14, 2017. [11] After competing in training camp and pre-season, MacDermid made the opening night roster with the Kings for the 2017–18 season. He made his NHL debut with Los Angeles on opening night in a 2–0 victory over the Philadelphia Flyers on October 5. [12] He scored his first NHL goal in a 4–0 win over the Montreal Canadiens on October 26. [13] [14] MacDermid was sent down to the AHL on January 16, 2018. In 34 games with the Kings, he tallied one goal and four points. [15] He spent the rest of the season with the Reign, making 32 appearances and marking one goal and five points as the Reign finished third again in the division. [1] The Reign made the playoffs but were knocked out in the first round for the second consecutive season, this time by the Texas Stars. In four playoff games, he went scoreless. [1]
On July 15, 2018, it was announced that MacDermid had signed a two-year, two-way contract with Los Angeles. [17] He was assigned to Ontario to start the 2018–19 season. [18] He spent the majority of the season in the AHL, playing 48 games and scoring five goals and 15 points. [1] He was recalled by Los Angeles on February 27, 2019. [19] Regarded as the Kings' "meanest fighter", he made 11 appearances with the Kings, recording one assist. [1] [20] For the 2019–20 season, MacDermid began with the Kings. [21] On January 3, 2020, MacDermid was suspended by the NHL for two games for an illegal check. [22]
On July 21, 2021, MacDermid was selected from the Kings at the 2021 NHL expansion draft by the Seattle Kraken. [23] On July 27, 2021, the Kraken then traded him to the Colorado Avalanche in exchange for a fourth round pick in 2023. [24] MacDermid signed a two-year contract extension with the Avalanche on April 5, 2022. [25] MacDermid did not appear for the Avalanche during the 2022 Stanley Cup playoffs as they won the Stanley Cup for the third time in franchise history. MacDermid's name is engraved on the Stanley Cup.
In his third year with the Avalanche during the 2023–24 season, on March 1, 2024, MacDermid was traded by Colorado to the New Jersey Devils in exchange for signing rights to Zakhar Bardakov and a 2024 seventh-round pick. [26] As a pending free agent, MacDermid opted to remain with the Devils, re-signing to a three-year, $3.45 million contract extension on May 17. [27]
On October 3, 2025, ahead of the 2025–26 season, MacDermid was traded to the Ottawa Senators in exchange for Zack MacEwen. [28]
