Castillo was sent outright to Triple-A Norfolk on Monday, Rich Dubroff of BaltimoreBaseball.com reports.

EDGE Analysis

Castillo was booted from the team's 40-man roster June 29 and will continue on with the organization in the minor leagues. He's yet to debut for the Tides this season but logged four starts earlier in the year with Triple-A Tacoma, accruing a 5.02 ERA and 1.13 WHIP with a 12:5 K:BB across 14.1 frames.

The Orioles designated Castillo (undisclosed) for assignment Sunday.

EDGE Analysis

Shortly after the Orioles claimed him off waivers from the Mariners on May 7, Castillo was placed on Triple-A Norfolk's 7-day injured list due to an unspecified injury. He made pair of rehab starts in the rookie-level Florida Complex League earlier this month and was reinstated from Norfolk's IL on Sunday, only to be simultaneously removed from the Orioles' 40-man roster to make room for Matt Bowman.

Triple-A Norfolk placed Castillo on its 7-day injured list May 13 due to an unspecified injury.

EDGE Analysis

After being acquired from the Mariners on May 7 and claiming a spot on the Orioles' 40-man roster, Castillo has yet to make his organizational debut. He may have gotten hurt during his final appearance with Triple-A Tacoma on May 3, though any potential injury didn't prevent him from passing a physical before the trade was made official. Once he's healthy, Castillo should occupy a spot in the Norfolk rotation.

The Mariners traded Castillo to the Orioles on Wednesday in exchange for cash.

EDGE Analysis

Castillo was designated for assignment Tuesday to make room on the Mariners' roster for Leody Taveras. Now in the Orioles organization, Castillo will reclaim a spot on the 40-man and presumably report to Triple-A, where he owns a 5.02 ERA and 1.13 WHIP through 14.1 innings on the year.

The Mariners designated Castillo for assignment Tuesday.

EDGE Analysis

The transaction frees up a spot on the 40-man roster for waiver claim Leody Taveras. Castillo has posted a 7.71 ERA, 2.71 WHIP and 5:7 K:BB across seven innings (two starts) this season during his time in the majors.

The Mariners optioned Castillo to Triple-A Tacoma on Thursday.

EDGE Analysis

Castillo's time with the big-league club was less than spectacular, as he'll head back to the minors after giving up seven runs (six earned) over seven total innings alongside a 5:7 K:BB. With George Kirby (shoulder) not expected back until May, the Mariners are again left with an opening in their rotation, and it's currently unclear who will be chosen next to fill the gap.

Castillo didn't factor into the decision Wednesday against the Astros after giving up four runs (three earned) on six hits and five walks in four innings. He struck out three.

EDGE Analysis

Two walks followed by a trio of singles gave the Astros a three-run lead in the second inning. Castillo then allowed another run on an RBI walk by Brendan Rodgers in the third frame, which went unearned due to a throwing error by the right-hander on the previous sequence. Castillo had trouble putting hitters away Wednesday, needing 100 pitches to finish the outing, and he holds an uninspiring 7.71 ERA, 2.71 WHIP and 5:7 K:BB across seven innings (two starts) this season.

Castillo is scheduled to make his next start Wednesday versus the Astros in Seattle, Matt Kawahara of the Houston Chronicle reports.

EDGE Analysis

Castillo made his Seattle debut and his first MLB start in San Francisco on Friday, when he struck out two and allowed three runs on six hits and six hits over three innings in a no-decision. While not overly impressive, Castillo's performance was good enough to earn him another turn through the rotation, but he likely won't be in store for an extended stay with Seattle. As soon as George Kirby (shoulder) completes a rehab assignment and is deemed ready to make his MLB season debut, Castillo will be the odd man out of the rotation, barring injuries to any of Seattle's other four starters.

Castillo allowed three runs on six hits and two walks while striking out two over three innings, taking a no-decision in Friday's extra-innings loss to the Giants.

EDGE Analysis

Castillo's first major-league start was nothing to write home about. He allowed an RBI single to Matt Chapman in the first inning and a two-run double to LaMonte Wade in the second. Castillo finished with 39 strikes on 68 pitches and forced the Mariners to dip into their bullpen early, with all eight relievers getting action in this contest. Castillo's only other major-league experience came in 2022 with the Tigers, when he threw 3.2 innings scoreless innings of relief. The fifth spot in the Mariners' rotation remains unsettled until George Kirby (shoulder) is ready for his season debut, but if Castillo gets another turn, he's lined up to face the Astros next week.

The Mariners selected Castillo's contract from Triple-A Tacoma, and he's scheduled to start Friday against the Giants.

EDGE Analysis

The right-hander allowed one run over 5.2 innings during his lone start for Tacoma this year and will now get a look in the big-league rotation. Castillo's only major-league experience came with Detroit in 2022, when he delivered a 4:0 K:BB over 3.2 scoreless frames in three appearances. He spent the 2023 and 2024 campaigns pitching in Japan and had a 3.01 ERA across 143.1 innings before inking a minor-league deal with Seattle during the offseason.