Gray, who had surgery to remove a bone chip in his right elbow, has gone 1-for-8 through three rehab games in the Florida Complex League.
Per Ian Cundall of Baseball America, Gray should be back in action for Single-A Charleston before the end of the month. Prior to the midseason surgery, Gray slashed .286/.406/.474 with six home runs, four steals, a 21.9 percent strikeout rate and a 16.1 percent walk rate in 49 games. He received just under $1 million when the Rays selected him in the third round last year and won't turn 19 until mid-August.