By Frankie Taddeo Chargers quarterback Justin Herbert is a slight favorite over reigning passing yards leader Tom Brady at SI Sportsbook to lead the NFL in passing yards. With the kickoff to the 2022 NFL season only five weeks away, SI Sportsbook is beginning to add attractive markets for sports bettors. Outside of Super Bowl futures, one of the most popular offerings involves predicting who will lead the league in passing yards. As an avid high-stakes, season-long fantasy football player, an integral part of my process for my fantasy projections includes incorporating the estimations assigned…