On March 4, 2015, Lewington signed a three-year, entry-level contract with Washington.[6] Although Lewington had the opportunity to join the Capitals American Hockey League affiliate, the Hershey Bears after the Tigers were eliminated from the WHL playoffs, Lewington needed surgery to repair a shoulder injury.[7] Although Lewington was healed by the time the Capitals 2015 training camp came around, he was assigned to the Hershey Bears to begin the season.[8] Lewington made the Bears opening night roster but before he had a chance to play a game, he was reassigned to their ECHL team on October 15.[9] Lewington spent the season splitting his time playing with the Hershey Bears and the South Carolina Stingrays of the ECHL. The following two seasons Lewington was a steady presence in the AHL, playing in 201 games before making his NHL debut.
Lewington played in 71 games for the Bears during the 2017–18 season. While he played in 71 games, Lewington was suspended twice in March,[10][11] and once in April.[12] Lewington was re-signed by the Capitals on May 18, 2018 to a two-year, two-way contract.[13]
Lewington attended the Capitals training camp prior to the 2018–19 season. On September 26 he was placed on waivers with the intention of reassigned him to Hershey.[14] After playing in 26 games, Lewington was recalled to the NHL on December 15.[15] On December 22, 2018, he made his NHL debut against the Ottawa Senators.[16] A week later in another game against the Senators, Lewington completed a Gordie Howe hat trick, recording his first NHL goal, assist, and fight in the process.[17] In the same game, fellow rookie defenseman Madison Bowey also scored his first NHL goal, making the two players the first defensemen in Capitals history to score their first NHL goals in the same game.[17] The following day Lewington was returned to Hershey.[18]
After five seasons within the Capitals organization, Lewington left the club as a free agent and agreed to a one-year, two-way contract with the Nashville Predators on October 13, 2020.[19] In the pandemic delayed 2020–21 season, Lewington made two appearances with the Predators registering 1 assist, remaining primarily on the roster as a part of the club's taxi squad.
As a free agent from the Predators, Lewington joined his third NHL organization in signing a one-year, two-way contract with the Boston Bruins on July 28, 2021.[20] Lewington was called up to the Bruins on an emergency basis on January 12, 2022, and made his Bruins debut the following day against the Philadelphia Flyers.[21] During that game, Lewington became the 1,012th player to appear in a game in the 2021–22 season, which broke the record for most players playing in a single season.[22]
As a pending free agent from the Bruins in the off-season, Lewington opted to halt his North American career in agreeing to a one-year contract with Austrian club, EC Red Bull Salzburg of the ICE Hockey League, on June 7, 2022.[23]
Personal life
Lewington was born to Linda and Marshall and grew up in Edmonton with his sister Amanda.[16]