The Rockies signed Castillo to a minor-league contract Thursday that includes an invitation to spring training, Aram Leighton of Just Baseball reports.

EDGE Analysis

Castillo, who turns 31 in January, has made just 15 appearances at the major-league level over the past two seasons, holding a 4.34 ERA and ugly 13:15 K:BB in 18.2 innings. The veteran reliever's stuff has deteriorated since his stint with the Rays, but the Rockies will take a look in camp to see what he might have left.

Castillo was designated for assignment Sunday.

EDGE Analysis

He loses his spot on the 40-man roster on the final day of the season and will be a free agent this offseason. Castillo walked more batters (eight) than he struck out (six) in the big leagues this season and last recorded a save in 2022 with Seattle.

The Twins recalled Castillo from Triple-A St. Paul on Saturday.

EDGE Analysis

Castillo has appeared in six games for the Twins this season, surrendering two earned runs across eight innings while striking out four batters and walking seven. He'll now come up from the minor leagues to give Minnesota's bullpen a fresh arm, taking the place of Kody Funderburk, who was optioned to Triple-A.

The Twins optioned Castillo to Triple-A St. Paul on Wednesday.

EDGE Analysis

Just three days after he was added to the Twins' 40-man roster and 28-man active roster, Castillo will head back to the minors to open up a spot for right-hander Louie Varland, who was recalled ahead of an expected bulk-relief appearance Wednesday versus the Rays. During his brief time with the Twins, Castillo made one appearance and struck out a batter in a scoreless inning.

The Twins selected Castillo's contract from Triple-A St. Paul on Sunday.

EDGE Analysis

Castillo had previously given up just two earned runs over seven innings over five appearances out of the Minnesota bullpen earlier this season, but the shiny 2.57 ERA came with an ugly 1.71 WHIP and 3:7 K:BB. He was bumped off the Twins' 40-man roster in June before he elected free agency, only to re-sign with the organization on a minor-league deal in early July. Castillo has continued to show spotty control at St. Paul this season (21 walks in 32.1 innings), so the Twins are unlikely to turn to him for high-leverage work during his latest stint in the big leagues.

Castillo signed a minor-league contract with the Twins on Wednesday.

EDGE Analysis

Castillo elected to become a free agent after he was pushed off the Twins' 40-man roster in June, and he will now return to the organization after exploring his options in the open market. The 30-year-old right-hander will report to Triple-A St. Paul, where he's put up a 2.50 ERA and 1.06 WHIP over 18 innings this season.

Castillo elected free agency Sunday.

EDGE Analysis

Castillo cleared waivers after the Twins designated him for assignment Wednesday, and rather than sticking around in the Minnesota organization as pitching depth at Triple-A St. Paul, the 30-year-old will look to find work elsewhere. Prior to being pushed off the 40-man roster, Castillo made five relief appearances for Minnesota and gave up two earned runs on five hits and seven walks over seven innings.

The Twins designated Castillo for assignment Wednesday, Do-Hyoung Park of MLB.com reports.

EDGE Analysis

The Twins needed to free up a spot on their 40-man roster for the addition of right-hander Jay Jackson to the bullpen. Castillo had just been sent down to Triple-A St. Paul on Tuesday following a brief stint with the big club in which he allowed two runs with a 3:7 K:BB over seven innings. If Castillo clears waivers, he will have the ability to elect free agency if he chooses to do so.

The Twins optioned Castillo to Triple-A St. Paul on Tuesday.

EDGE Analysis

Castillo allowed just two runs over seven relief innings during his brief time with the Twins, but that came with a 3:7 K:BB. The veteran reliever will head back to Triple-A to clear room on the active roster for right-hander Louie Varland, who was called up from St. Paul to make a spot start Tuesday against the Rockies.

Castillo will be optioned to Triple-A St. Paul prior to Tuesday's game against the Rockies, Aaron Gleeman of The Athletic reports.

EDGE Analysis

Castillo issued one walk and struck out one in a scoreless frame Monday night, but he'll be rewarded with a demotion. The Twins are recalling Louie Varland from Triple-A St. Paul in a corresponding move.