Khalil Mack and Derek Carr remained close even after they stopped being teammates. Carr was devastated to lose Mack in a trade for a Raiders' future draft compensation, both in the locker room and on the field.
Beyond the friendship, the two became main members of the silver and black, and brought much promise to the organization and hoped to create a culture change.
That, unfortunately, didn't come to fruition.
But we're lucky they still participate in Twitter exchanges to show there are no hard feelings and the bromance is still alive and well.