BREAKING: First baseman Josh Naylor and the Seattle Mariners are finalizing a five-year contract, sources familiar with the deal tell ESPN. The first major free agent to sign this winter goes back to Seattle, where he was beloved after joining the Mariners in a deadline trade.

The Mariners have lost a pair of coaches to other teams since the GM meetings ended Thursday. Here's what else we learned during this week.

Seattle Mariners, fresh off a near World Series run, are eyeing a blockbuster trade for Fernando Tatis Jr. to bolster their offense. This move, fueled by a strong farm system and a championship window,

Cal Raleigh, Julio Rodríguez, Bryan Woo and Andrés Muñoz were named to the All-MLB teams, giving the Seattle Mariners a league-high-tying four selections.

Seattle Mariners fans react after Cal Raleigh finishes second in MVP voting behind Aaron Judge, sparking anger across club supporters.

As MLB rumors swirl amid free agency, the Mariners could make another splash. Find out why the Mariners are the favorites for Mets Pete Alonso.

Seattle Mariners manager Dan Wilson finished third in voting for the AL Manager of the Year Award, which was won for a second time by Stephen Vogt of the Cleveland Guardians.

The Athletics have made their first signing of the offseason, and it comes in an area of need for the club. On Wednesday, Jon Morosi reported that the A's had come to terms on a minor-league deal with veteran right-hander Nick Anderson. Per Morosi, his MLB salary will be $1M if he’s added to the 40-man roster.