By Kyle Wood Tennessee lost the most receiving production in the NFL over the offseason, namely A.J. Brown. How will the Titans new pass catchers fill the void? Note: While a big part of fantasy football research is trying to assess how players will do when they go to a new team, it’s also critical to get a handle on what the old team is doing to replace those players. It’s an opportunity for players to step up and fill the void. In this series, we’ll examine six teams that had key departures this offseason and must find new ways to replace key fantasy production. One of the most run-heavy off…