Four NFL offensive linemen spoke with CBS Sports' Pete Prisco and unloaded on the state of coaching in the NFL.
The four linemen — Chicago Bears tackle Bobby Massie, Bears guard Kyle Long, Tennessee Titans guard Chance Warmack and New York Giants center Weston Richburg — also slammed the grades handed out by Pro Football Focus.
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Massie, Long, Warmack and Richburg were four of about 30 linemen working out at the O-Line Performance Center, owned and operated by former NFL lineman LeCharles Bentley.