Defensive shift limits have been in effect since the beginning of the 2023 season, but challenges to shift violations have ...

The Seattle Mariners challenged the Kansas City Royals' defensive positioning, and it proved to be an important call in Thursday's game.

The Seattle Mariners are sticklers for the new shift rule. As the Mariners faced he Kansas City Royals on Thursday, Royals' ...

Mariners manager Dan Wilson initiated a replay challenge for a shift violation. Wilson felt that Kansas City Royals second baseman Michael Massey hadn’t fully been on the infield dirt — but had one ...

The Mariners' appeal was the first time that a fielder has been charged with an error on a shift violation after MLB changed ...