Follow our daily updates from Bills training camp, including intel on the QBs, tight position battles and potential breakouts.

Here are three observations from the second day of Bills training camp: While not an on-field note, running back James Cook has been in headlines throughout the offseason because of his contract dispute with the team. Cook wants a new deal and is entering the final year of his current one.

There are more cameras at Buffalo Bills training camp this year, with the crew from HBO's "Hard Knocks" capturing exclusive behind-the-scenes moments this summer. The sports documentary series is produced by NFL Films for HBO.