What is a good PvP Horde race for Warlocks in World of Warcraft?

I would like to know the benefits each race would have to my warlock. I plan on doing a lot of pvp, so that's my first priority.

I don't yet own the full game, so I can only get to lvl 20 (if that matters). Thanks for any help!

Solution 1:

Let's start by summarizing what each race will bring to the table, leaving out the racials that are irrelevant or largely useless to a PvP warlock:

• Orc: A minor spell power boost every 2 minutes, a 5% pet damage boost, and a 15% stun duration reduction.
• Troll: 15% snare duration reduction and a 20% haste boost every 3 minutes.
• Undead: Dispel charm/fear/sleep every 2 minutes.
• Blood Elf: Instant AoE silence and minor mana restore every 3 minutes. (Note: Only has an 8 yard range, so you probably won't be using it against enemy spellcasters.)
• Goblin (available if you buy the Cataclysm expansion): A rocket jump.

In PvP burst damage is king, so the standout abilities (on paper) are the Orc's spell power or the Troll's haste abilities. The Undead's ability to remove charm/fear/sleep is also very useful, but there are items you can easily obtain which can do the same thing.

I'd be less inclined to choose Blood Elf or Goblin because I don't really view their racials as useful in PvP (again, as a Warlock), but honestly, you can excel at PvP with any race. It largely comes down to flavor and personal choice.