There are now two Luis Castillos in the Mariners' rotation -- one nicknamed "The Rock," the other "The Pebble." Here's more ...

The Seattle Mariners are giving their No. 6 starting pitcher another shot in the major leagues in a critical rubber match ...

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

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

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

The Mariners begin a road trip with a defeat in Cincinnati, snapping Seattle's four-game winning streak despite two home runs ...

We've known that Polanco can't play defense or swing from the right side, but we only heard it was because of "soreness." Now ...

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

The Seattle Mariners are on one of their best stretches of the season and will have a chance to continue the string of good baseball on a national stage. The Mariners will play the Toronto Blue Jays ...

"I spent five years here, and being able to pitch here on that mound again was special," Castillo said Tuesday night.

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

Up until the point the Cincinnati Reds dealt him to the Seattle Mariners, Luis Castillo’s story with the club was basically ...