I was questing in Twilight Highlands as my Prot paladin at 85 when an 85 Arms warrior tried to gank me.
I was fighting 2 mobs at the time but that helped me proc reckoning so I managed to kill him.
30 mins later I'm down in that mine with the Goblin quest NPC and I see the same warrior. I /bow to him and continue questing / mining. A Death Knight shows up. I pull a couple of mobs, they charge me. I beat them again.
They respawn a few minutes later and the Death Knight doesn't even regen before they attack me. I win... again.
They left me alone after that. Silly Gankers =>