Johnson was the 31st overall pick of the Sabres in the 2019 NHL Entry Draft. The 23-year-old defenseman made his NHL debut last season, scoring seven points (0G / 7A) in 41 games. He has spent the entirety of the 2024-25 campaign with the Rochester Americans (AHL), scoring five points (0G / 5A) in 21 games. Johnson's call-up may indicate that Rasmus Dahlin (back spasms) could miss some time.
