Lee cleared waivers Thursday and will head to Triple-A El Paso, Dennis Lin of the San Diego Union-Tribune reports.
Lee was DFA'd by the team Monday in order to make room for Dillon Overton on the roster following his struggles this season. With El Paso, Lee has posted a 5.73 ERA with a 2.05 WHIP and a 14:15 K:BB. He made three appearances with the Padres, all coming in April, and will provide organizational depth moving forward.