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

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

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

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

The Seattle Mariners head north of the border as they face the Toronto Blue Jays. It’s time to continue our MLB odds series ...

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

Servais appeared on the "Foul Territory" TV program on Thursday, and despite what's been floated around on social media, he ...

Seattle Mariners infielder Jorge Polanco has been relegated to designated hitter duty only, and he's also been relegated to ...

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

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

In a wild back-and-forth contest between the Arizona Diamondbacks and Chicago Cubs on Friday, Eugenio Suarez hit a home run ...

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