Dumoulin, who was injured in last night's game against the St. Louis Blues, had surgery to repair lacerated tendons in his left ankle. The surgery was performed at UPMC Presbyterian by team physician, Dr. Dharmesh Vyas, in collaboration with Dr. MaCalus Hogan and Dr. John Fowler, of UPMC.
The blueliner is expected to be sidelined for a minimum of eight weeks.
