The Rays optioned Cook to minor-league camp Sunday.
The 24-year-old was added to Tampa Bay's 40-man roster in November but was always a longshot to crack the Opening Day roster. Cook missed some time in 2025 due to injuries but pitched well for Double-A Montgomery when available, finishing with a 2.30 ERA, 0.86 WHIP and 18:3 K:BB over 15.2 innings.