This article was originally published on www.si.com/mlb/mariners as Which Pitcher Would Start Game 1 of a Playoff Series For Seattle Mariners? .

A deadline highlighted by surprising twists has passed. Here's what you need to know about the deals that defined this trade season.

The Mariners are swinging for the fences in 2025 as the team attempts to bolster its lineup at the trade deadline for a playoff run.

The Seattle Mariners took advantage of a down day for the rest of the American League contenders with a 3-1 win against the Athletics on Monday at Sutter Health ...

Wednesday's start was one of Luis Castillo’s worst of the season, as the Mariners’ veteran allowed six runs over five innings in a lopsided 10-2 loss.

Luis Castillo reacted to his stellar effort against the Houston Astros in the Seattle Mariners' victory on Friday night.

SEATTLE — All it takes sometimes to wind up on the losing side is one bad inning. Wednesday afternoon’s start was one of Luis Castillo’s most frustrating, and worst of the season, the type ...

Sports Seattle Mariners Luis Castillo, Mariners crushed by Brewers in series finale July 23, 2025 Updated Wed., July 23, 2025 at 5:03 p.m.

The post MLB rumors: Luis Robert Jr. trade suitors think White Sox are ‘bluffing’ on ‘ridiculous’ stance appeared first on ClutchPoints. The MLB Trade Deadline is two days away, and the ...

Luis Castillo allowed a run in seven innings, Josh Naylor hit his first home run for the Mariners and Seattle beat the Athletics 3-1. Castillo (8-6) gave up five hits ...