The Kansas City Chiefs, led by Patrick Mahomes, are entering the new NFL season with a mix of optimism and caution. Despite winning their second consecutive Super Bowl, Mahomes admitted the previous season wasn't their best, emphasizing the need for improvement and higher intensity in their preparations. The Chiefs' training camp is drawing significant attention, with Mahomes bringing along a TV for the first time to catch the Paris Olympics and play video games. The Chiefs' wide receiver room faces challenges, including legal issues for Rashee Rice and persistent distractions from Kadarius Toney. In contrast, the Cleveland Browns continue to have high hopes for Deshaun Watson, despite his struggles and comparisons to Mahomes from teammates. NFL personnel widely regard Mahomes as the best quarterback, with potential to further improve his already legendary career.