Rob Havenstein, the Rams’ longtime right tackle, announced his retirement after 11 seasons with the franchise in a social media post on Tuesday.  Drafted in the second round of the 2015 NFL Draft out of Wisconsin, Havenstein arrived during the Jeff Fisher era, back when the Rams were still tethered to St. Louis and relevance felt like a distant promise. He survived regime changes, schematic overhauls, relocation and the violent churn of the NFL, becoming one of the few true through-lines of the