Mazur (lower body) was activated from the injured/non-roster list and assigned to AHL Grand Rapids on Tuesday.
Mazur (lower body) is week-to-week, Red Wings coach Derek Lalonde told Ansar Khan of MLive.com on Wednesday.
Mazur (lower body) won't be available for the start of training camp, Daniella Bruce of the Red Wings' official site reports.
Mazur (lower body) didn't finish Thursday's game versus the Stars at the Traverse City prospect tournament, Daniella Bruce of the Red Wings' official site reports.
Mazur agreed to terms on a three-year, entry-level contract with Detroit on Tuesday.
Mazur was drafted 70th overall by the Red Wings at the 2021 NHL Draft on Saturday.