Helleson (lower body) will be out for at least one week, but he could be available for the start of the regular season, Zach Cavanagh of The Sporting Tribune reports.
Helleson will miss the rest of the preseason after he logged only 9:08 of ice time in Sunday's 6-2 win over San Jose. He produced two goals, 15 points, 39 shots on net, 79 blocked shots and 63 hits in 60 appearances for the Ducks during the 2025-26 regular season.