The Guardians activated Boyd (elbow) from the 15-day injured list Tuesday.
Boyd is set to make his Guardians and season debut Tuesday against the Cubs after completing the long road back from Tommy John surgery. The left-hander's results during his rehab assignment were excellent, as he put up a 0.83 ERA with 27 punchouts over 21.2 innings. He threw 63 pitches in his final rehab start, so Boyd will probably be capped around 80 pitches Tuesday.