What happened: A training camp preview rounds up the NFL's biggest early storylines, headlined by Patrick Mahomes' injury update, Aaron Rodgers' farewell tour and a slate of quarterback competitions across the league.

Why it matters: Mahomes' status remains the swing factor for a Chiefs team already navigating uncertainty over his Week 1 availability against the Broncos. Rodgers' camp arrival draws attention as a farewell-tour storyline, while the crowded QB-battle picture will shape depth charts before rosters are set.

What to watch: Camp battles and QB competitions play out over the coming weeks as teams finalize Week 1 plans.