Rodriguez played his first rehab assignment game on July 2, 2013, with the Yankees Class-A Low affiliate, the Charleston RiverDogs. He continued his rehabilitation and played for the Yankees Triple-A team, the Scranton/Wilkes-Barre RailRiders on July 18. Two days prior to his scheduled promotion to the major league roster, Rodriguez sustained a new injury, as an MRI later revealed a Grade 1 quad strain, delaying his return and forcing him to continue rehabilitating in the minor leagues. Rodriguez independently sought a second opinion on his quad strain on July 24 with a doctor who stated that there did not appear to be an injury; the Yankees front office expressed further dismay, claiming that he violated league rules for seeking a second opinion without the team's permission. He completed his rehabilitation program with the Yankees' Double-A affiliate Trenton Thunder.