Bukauskas cleared waivers and was sent outright to Triple-A Tacoma on Friday.
After being claimed by the Mariners in mid-January and DFA'd Tuesday, Bukauskas is now set to begin 2023 in the Mariners' farm system and attend major-league spring training as a non-roster invitee. The 26-year-old right-hander recorded a 2.79 ERA and 1.31 WHIP through 19.1 Triple-A innings last season.