Isaac Mattson Claimed Off Waivers by Seattle Mariners from Pirates

Right-handed pitcher Isaac Mattson was claimed off waivers by the Seattle Mariners from the Pittsburgh Pirates as part of early offseason roster shuffling. The transaction adds bullpen depth for Seattle as the club reinstates seven players from the 60-day injured list, outrights five others to Triple-A Tacoma, and prepares for potential winter roster deadline requirements ahead of the looming December lockout.