Getty CJ Gardner-Johnson. The Baltimore Ravens have the worst defense in the NFL by most metrics. They also have one of the most injured defenses in the NFL. The team is currently without defensive linemen Nnamdi Madubuike , linebacker Roquan Smith , and cornerback Marlon Humphrey , who returned to practice in a limited fashion. The Ravens are searching for answers, and they’re hoping one of them will be Super Bowl Champion safety CJ Gardner-Johnson . Johnson was most recently with the Houston