Dumoulin (undisclosed) rejoined his teammates at Friday's practice, Zach Dooley of the Kings' official site reports.
Dumoulin missed the opening day of training camp to undergo additional testing, but he received clearance and feels good to go. The 35-year-old defender recorded two goals, 17 points, 61 shots on net, 89 blocked shots, and 36 hits over 82 outings in the 2025-26 regular season.