Castillo battled through five laborious innings for the M's on Sunday against the Toronto Blue Jays, earning the win, but ...

In addition to the starting duo, the M's also have another Julio Rodríguez in the organization "We are duplicating names left ...

According to a report from Bob Nightengale of USA Today, the M's were offered a young infielder for Castillo, but said no.

Seattle Mariners starting pitcher Luis Castillo surfaced in MLB rumors this winter when the clubs fielded inquiries on the ...

Castillo struggled against the Cincinnati Reds, going just 4.1 innings and giving up six earned runs. Unfortunately, this ...

Austin Hays drove in four runs in his season debut, and the Cincinnati Reds beat Luis Castillo and the Seattle Mariners 8-4.

Seattle Mariners right-handed pitcher Luis F. Castillo was optioned to Triple-A Tacoma following their contest on Wednesday afternoon against the Houston Astros. Castillo was given two starts during ...