Seattle activates newly acquired Tyler Anderson

The Seattle Mariners announced Thursday that left-handed pitcher Tyler Anderson has been added to the active roster, following his acquisition from the Pittsburgh Pirates earlier this week.

To make room, right-handed pitcher Ryan Weber was optioned to Triple-A Tacoma.

Anderson, 31, was acquired from the Pirates in exchange for minor league prospects Carter Bins, a catcher, and right-handed pitcher Joaquin Tejada.

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