Barlow (undisclosed) is unavailable for Wednesday's preseason contest versus Miami, Brad Rowland of the Locked On Podcast Network reports.
Barlow missing his second consecutive preseason contest is especially notable in the context of Onyeka Okongwu (toe) also being unavailable. Barlow's next opportunity to prove himself comes Thursday as Atlanta closes a back-to-back set versus Oklahoma City, but it's unclear why the 21-year-old two-way signee is inactive.