Mitchell was called up from AHL San Diego on Wednesday.
Although Mitchell successfully cleared waivers, it seems he won't be in the minors when Anaheim opens the 2026-27 campaign in Vegas on Friday. The 26-year-old had a goal, 17 points and 87 PIM in 58 regular-season outings with AHL Bridgeport in 2025-26. He also recorded a goal and six PIM in nine NHL regular-season appearances with the Islanders last year. Mitchell might be part of the third pairing versus Vegas.