The Dolphins claimed Cook off waivers from the Jets on Monday.
Both Cook and Bailey Zappe lost out to rookie fourth-rounder Cade Klubnik for the Jets' backup quarterback job behind Geno Smith. Cook will get a new opportunity in Miami, where he is expected to slot in as the Dolphins' QB3 behind starter Malik Willis and backup Kyle McCord. Cook appeared in five regular-season games (four starts) for the Jets in 2025, completing 57.5 percent of his passes for 739 yards, two touchdowns and seven interceptions while turning 13 carries into 49 yards.