Estrada (knee) moved his rehab assignment up to Triple-A El Paso, walking two and allowing one hit over one-third of an inning in an appearance Tuesday.
Working his way back from right knee inflammation, Estrada began a rehab assignment last week in the rookie-level Arizona Complex League. He's been shelved since early June, so Estrada could be asked to make another rehab appearance or two before being reinstated to the Padres' active roster.