Free safety Trenton Robinson, left, spent the past three seasons with Washington after the 49ers drafted him in the sixth round in 2012.
Free safety Trenton Robinson, left, spent the past three seasons with Washington after the 49ers drafted him in the sixth round in 2012. Patrick Smith Getty Images
Free safety Trenton Robinson, left, spent the past three seasons with Washington after the 49ers drafted him in the sixth round in 2012. Patrick Smith Getty Images