If the Mariners want to hold on to their division lead, however, they should add another established late-inning arm to take ...

The Mariners dealt Luis F. Castillo to the American League East club; The former Nippon Professional Baseball pitcher had his ...

In a division that is open for the taking, here are three players that would cement the Seattle Mariners as the favorites in ...

The Seattle Mariners traded a pitcher they recently designated for assignment to the Baltimore Orioles late Wednesday night ...

The Seattle Mariners traded right-hander Luis F. Castillo – not to be confused with three-time All-Star Luis Castillo – after designating him for assignment.

The Mariners put Luke Raley on the 10-day IL, called up Rhylan Thomas and designated Sauryn Lao for assignment. Read more at ...

ESPN MLB Insider Jeff Passan joins Brock & Salk to discuss the Mariners 4-game losing streak at the hands of the AL East's Blue Jays and New York Yankees, thoug ...

The Orioles acquired right-hander Luis F. Castillo from the Seattle Mariners for cash considerations on Wednesday. The F. is ...

May 7: The M’s announced today that Taveras has reported to the team with Thomas optioned to Triple-A as the corresponding ...

A Toronto Blue Jays trade idea sends Max Scherzer to the AL West’s Seattle Mariners ahead of the MLB trade deadline in the ...

The situation involving the Boston Red Sox and Rafael Devers is a mess. There's a lot to going on, but let's just keep it simple and to the basics: 1) Devers wa ...