By Frankie Taddeo The Commanders intend to part ways with coach Ron Rivera at the end of the season, The Athletic’s Dianna Russini reported Saturday. The 61-year-old Rivera, who has compiled a 26-36-1 (.421) record in four seasons in Washington, is enduring his worst year as a head coach, with the Commanders sitting at 4–9. Russini reported that new Commanders owner Josh Harris already has made the decision to fire the veteran coach as the club will look to build around a likely top pick in the 2024 NFL draft. “At this point it’s understood around the building based on multiple people I have s…