After being forced to play 12 innings on Saturday, the Mariners are giving prospect Sauryn Lao a chance to make his major ...

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

Jose Berrios took exception to something that Raleigh did on the basepaths in Saturday's contest. After the game, here's what ...

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

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 ...

Toronto Blue Jays prospect Alan Roden was shaken up after this meeting with Tellez at first base, while Tellez didn't even appear to feel it.

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

Seattle is looking to upgrade its lineup, but is not currently interested in trading from its vaunted rotation to do so. Read ...

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

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

Troy Taylor was thought to be one of the solutions in the bullpen for Seattle, but he's headed back to Triple-A Tacoma.