The Facts: Four players will open training camp on the physically unable to perform list (PUP), including Miller (knee), fullback David Johnson(knee), linebacker Sean Spence (knee) and defensive lineman Alameda Ta’amu (hamstring). All were pre-existing injuries before reporting to camp. “I don’t have any prognosis in terms of their availability or even when we’ll start the process of considering those guys,” said HC Mike Tomlin. “We’ll take it day-by-day and monitor their progress.”

Diehards Line: Miller recently suggested there was a "chance" he'd be able to play the entire 2013 season after tearing his ACL late last season but admitted there's no timetable yet for his return to full activity. ... Stay tuned. This is clearly a situation worth watching. Remember: Miller was having his best season as a pro last year while leading all Steelers position players with 50 points and 71 receptions.