Mariners president Kevin Mather is OUT in Seattle ... the org.'s honcho has just resigned after MLB and MLBPA officials say he made "inappropriate" and "disturbing" comments about his team.
Mather joined a call with a Rotary Club earlier this month and spoke at length about his team ... and in parts of the conversation -- which surfaced on video over the weekend -- he made cracks about some of his players' and staffers' abilities to speak English.
When talking about Hisashi Iwakuma -- a former M's pitcher who just signed on to be a part of the Mariners' coaching staff -- Mather said, "Wonderful human being; his English was terrible.