The Guardians claimed Tena off waivers from the Nationals on Friday, Tim Stebbins of MLB.com reports.
Tena was dealt from Cleveland to Washington at the 2024 trade deadline, and he's now returned to his original organization. The 25-year-old infielder slashed only .222/.302/.370 with seven home runs over 114 contests with the Nationals in 2026. Tena does not have minor-league options remaining, so the Guardians are unable to send him to the minors without passing him through waivers first.