http://www.panthers.com/news/article-2/Panthers-Sign-Safety-Trenton-Robinson/257d35f8-8137-4539-b165-ee35fedf5176 CHARLOTTE – The Panthers have added depth to the secondary, signing safety Trenton Robinson to a one-year contract. Robinson spent the past three seasons with Washington, starting a career-high seven games and recording one interception in 2015. His season was cut short after a hamstring injury landed him on injured reserve and he was later released. Robinson's career