[Mardur]

Any race can tank any expansion. Race actually matters way more in classic, as gear doesn't scale the same as mob difficulty (when you're tanking mobs hitting for 700-1000 any tank is going to die in the same number of rounds). Gear far outweighs any racial advantages as you move through the expansions. When you're running CH chains in Velious, it doesn't really matter who's tanking as long as they're a warrior. One of our main tanks in IV (sleeper top guild) was a gnome warrior.