Mackey had three goals, four assists, 31 SOG, 48 PIMs and a -4 plus/minus with both Calgary and Arizona in 2022-23 and has signed a one-year, two-way contract worth $775,000 AAV with the New York Rangers. The 26-year-old defenseman has four goals and 11 points in 39 career NHL games after being signed as an undrafted free agent out of Minnesota State University (NCAA) in 2020-21.

Mackey had two goals, three points, nine PIMs and a -6 plus/minus through 10 games with the Calgary Flames and has been traded alongside Brett Ritchie for Troy Stecher and Nick Ritchie. The 26-year-old has 29 career NHL games across 19 games played.

Mackey was an undrafted free agent who just finished his junior year at Minnesota State University, where he led all of their blueliners with 24 points (7G / 14A) in 36 games. He was named WCHA First team All-Star and finished with a league-high plus-19 rating while helping the Mavericks to a league-best 31-5-2 record.