Franco (hamstring) participated in agility drills ahead of Thursday's game against the Tigers, Marc Topkin of the Tampa Bay Times reports.
Franco hit off a tee and participated in pregame activities Wednesday, and he continued to work on the field Thursday to test his hamstring. The 20-year-old has made quick progress in his recovery after he was placed on the 10-day injured list Saturday, but the Rays will likely exercise caution in bringing him back to preserve his health ahead of the postseason.