Cueto (elbow) was reinstated from the 10-day injured list Thursday.
Cueto had been on the injured list since Sept. 1, but he'll rejoin the active roster ahead of Thursday's series finale against the Diamondbacks. He made a rehab appearance at Triple-A Sacramento last week and allowed one run in 1.2 innings. The right-hander is expected to be used as a reliever during the final few games of the regular season.