Seattle Mariners outfielder Mitch Haniger smacked a grand slam in Friday's 6-1 win over the Diamondbacks. It was his lone hit on the day, but it was a big one that broke the game open.

The Seattle Mariners officially announced the re-signing of Jorge Polanco plus the addition of pitcher on Monday.

Cade Marlowe’s tenure with the Seattle Mariners organization may have come to an end. The Mariners designated Marlowe for assignment Monday. The move comes after Seattle signed Jorge Polanco. With its ...

WELCOME TO SEATTLE JUSTIN TURNER 🚨 JT gets a GRAND SLAM in his first game in Seattle. WOW. Mariners take an 8-0 lead in the 2nd inning against the 65-win Phillies. WOW. pic.twitter.com ...

The Seattle Mariners' offseason plans were dealt ... stint on the major league roster and have him be Raley's partner. Grand slam for Justin Turner.