The Chicago Cubs have announced a series of roster changes, designating former closer Adbert Alzolay for assignment. Alzolay, who has struggled since undergoing Tommy John surgery in August, is among several roster moves that also include the addition of top prospects Owen Caissie and Ben Cowles to the 40-man roster. The team has also designated outfielder Brennen Davis for assignment. These moves come in preparation for the upcoming Rule 5 Draft, with the Cubs looking to protect their promising talents while parting ways with players who have not met expectations.