Brown (hamstring) wasn't spotted at Friday's practice, Jim Wyatt of the Titans' official site reports.
Fellow starting wideout Julio Jones (hamstring) also wasn't out there for the start of Friday's practice, and it looks like the Titans may be without both players Sunday against the Jets. Tennessee's final Week 4 injury report will reveal whether Brown and/or Jones head into the weekend with any shot to play. Next up for WR opportunities should the duo be ruled out are Nick Westbrook-Ikhine, Chester Rogers, Josh Reynolds and perhaps Marcus Johnson (undisclosed), if he's activated from IR.