By Chris Rosvoglou Tennessee Titans wide receiver Treylon Burks was unable to finish his first day of rookie minicamp. He left the field not once but twice during Friday’s session. Burks was reportedly “laboring” in team drills. After practice was over, Titans head coach Mike Vrabel commented on this situation. “I think it’s hard to think that they can recreate, with a trainer, how we do things, and we see that with guys that have come back and started with our offseason program and guys that have joined a few weeks in. It’s just different,” Vrabel said. “I know that they’re working, and they …