Embed from Getty Images   It’s no easy task to look at the National Football League’s 97-year history and select the 100 best players to ever wear a uniform. The game has evolved from a run-heavy, pass-resistant environment to one in which the modern rules cater to high-volume passing attacks. Statistics are readily available to today’s fans, but that wasn’t the case 50, 40, even 30 years ago. I can’t…