The Baltimore Orioles have made a notable move in the 2025 MLB season by acquiring right-handed pitcher Luis Castillo from the Seattle Mariners. This trade aims to strengthen the Orioles' pitching depth as the team looks to rebound from a challenging start to their campaign.

![Luis Castillo in the dugout after the Orioles trade](/image/20250508/459decc97d.jpg "Luis Castillo with Orioles" "Luis Castillo reacts to the Orioles-Mariner trade news")

Orioles Make Their Move: Why Luis Castillo?

After opening the season with a 13-22 record, the Orioles needed immediate reinforcements, especially on the mound. The team finalized a deal to obtain Luis Castillo in exchange for cash, just as the Mariners made room for their own roster adjustments. According to MLB Trade Rumors, Castillo's brief spell with Seattle included five major league appearances and a handful of minor league starts. Although he allowed seven runs in seven innings this year, his effective 2.96 ERA during a stint in Japan last season underscores his potential value.

Immediate Impact and Future Prospects

Castillo has been optioned to Triple-A Norfolk for the time being. Orioles fans may not see him in the big league rotation right away, but his track record suggests he could contribute later in the season if needed. As highlighted by Yahoo Sports, the Orioles' front office is giving itself as many options as possible by building depth with arms like Luis Castillo. While his 7.71 ERA might not impress at first glance, a change of scenery could help the right-hander rediscover his form.

A Roster Shuffle: Corresponding Moves

To create space for Luis Castillo, Baltimore designated left-handed pitcher Walter Pennington for assignment. The Mariners, for their part, needed to free up a 40-man roster spot after claiming outfielder Leody Taveras off waivers. This kind of midseason roster management is common and crucial for teams trying to stay competitive. The move also reflects on how Castillo, despite not offering high strikeout numbers, is seen as a reliable option with past minor league and international experience. For more details on his recent assignment, check the FantasyPros update.

What This Means for Baltimore’s Pitching Depth

Luis Castillo joins other optional starters at Triple-A, adding insurance if injuries or slumps hit the Orioles’ major league staff. Though not a headline-worthy move, this trade demonstrates the organization’s commitment to finding solutions during a tough stretch. Fans can look forward to seeing whether Castillo’s blend of experience can bolster the pitching corps down the line.

Conclusion

The Orioles’ acquisition of Luis Castillo may not dominate headlines, but it plays a key role in addressing depth issues within their pitching staff. As the season progresses, watch for Castillo’s name as Baltimore looks to climb up the AL East standings. Orioles supporters and MLB fans alike should stay tuned for further updates and performance reviews as Castillo's chapter in Baltimore begins.