Hathaway, now with the Philadelphia Flyers, spent four seasons with the Washington Capitals alongside Tom Wilson between 2019-2023. Wilson and Hathaway are two of the NHL's most physical players, Wilson tied for 6th in the league in PIMs with 90, and Hathaway 13th with 80.
What led to the fight between the two wasn't exactly clear, but the two seemed to cool down quickly following the fight, both calmly going to the penalty box to serve their time.
Hathaway, 32, has 6 goals and 10 points in 61 games for the Flyers this season. Hathaway played parts of 4 seasons with the Calgary Flames before Washington, and played for the Boston Bruins last season.
Wilson, 29, is in his 11th season with the Washington Capitals. Wilson, a two-time NHL all-star, including this past season, won the Stanley Cup with Washington in 2018.