The Cincinnati Bengals placed defensive end Robert Geathers on season-ending Injured Reserve on Wednesday two days after he suffered an elbow injury in the 20-10 victory against Pittsburgh. Geathers is the longest tenured Bengals player after being drafted in the fourth round in 2004. He appeared in 140 games with 108 starts including the postseason. The Bengals also waived first-year linebacker J.K. Schaffer and re-signed safety Jeromy Miles whom they had waived on Monday with a hamstring injury he suffered in the season-opener in Chicago. The team also signed free agent cornerback Curtis Marsh a third-year player who was third-round draft pick of the Philadelphia Eagles in 2011 for some added depth in the secondary as cornerbacks Adam Jones Dre Kirkpatrick and Brandon Ghee all missed practice Wednesday with injuries.