TAMPA, Fla. » Alex Rodriguez has reported back to the New York Yankees’ minor league complex, three days after he was diagnosed with a strained left quadriceps on the final day of his injury rehabilitation assignment.

Rodriguez, under investigation by Major League Baseball for his reported ties to a clinic accused of distributing banned performance-enhancing drugs, did not speak with reporters when he arrived in a SUV shortly after 11 a.m. today.

The third baseman, who turns 38 on Saturday, had been recovering from hip surgery in January. He hit .250 (8 for 40) with two homers and eight RBIs in 13 minor league games before the leg injury.

New York said A-Rod was being sent to Tampa for "for rest and treatment." The Yankees have not said whether they intend to send him on another rehab assignment.