Verlander (hamstring/hip) threw a mound session Saturday with hitters standing in, Jason Beck of MLB.com reports.
Although the batters Verlander faced weren't taking any swings, Saturday's session marks a tangible step forward for the future Hall of Famer. He's already confirmed that he will retire at the end of the year, and the Tigers are hoping that he'll be able to make one last start during the final weekend of the regular season.