Madden 12 Hall of Fame Edition' detailed - ESPN
John Madden talks 'Madden' foootball, video games as teaching
Rob Gronkowski won't say 'never' on return, but not in 2019 - ESPN
Madden 12' gameplay adds new tackling system, smarter defense - ESPN
Peyton Hillis wins 'Madden NFL 12' cover vote - ESPN
Rob Gronkowski, American Football Wiki
Rob Gronkowski - Wikipedia
Six things you need to know about 'Madden 12' franchise mode - ESPN