Nick Pollock, who founded "Pitcher List," sees some concerning trends with the M's pitcher, who has recently been involved in trade discussions.

After losing Corbin Burnes in free agency, the Baltimore Orioles appear to be focused on the trade market to upgrade their rotation going into the

The Blue Jays, Giants, and Orioles are among the best fits for Mariners righty Luis Castillo on the trade market. Read more at MLB Trade Rumors.

The Seattle Mariners traded for Luis Castillo at the 2022 deadline with the hope he’d be the Cy Young candidate he was in the National League. Castillo showed well that year en route to a playoff appearance,

The Seattle Mariners infield remains the organization's biggest question mark a little more than a month until pitchers and catchers report to Spring Training.

The Seattle Mariners and Baltimore Orioles might be looking to swing a big trade.The two teams have discussed a swap involving three-time All-Star right-hander Luis Castillo in recent days, according to MLB Network's Jon Morosi.