Blake (concussion) isn't expected to return to practice until next week, Keith Langlois of Pistons.com reports.

EDGE Analysis

Blake was initially on track to rejoin the team for their full session Friday, but after he experienced headaches while working out earlier this week, the Pistons will push his return timetable back. It now appears likely that the veteran point guard could be at risk of missing the remainder of the preseason schedule, casting some doubt on his availability for the Oct. 27 regular-season opener versus the Hawks. Once healthy, Blake is in line to serve as the top backup at the point to Reggie Jackson, at least until Brandon Jennings (Achilles) returns later in the year.