I disagree with the posts that said wrestling isn't a useful for self defense as BJJ... I think wrestling is excellent in a self defense context for the following reasons;
1.) Is more effective than BJJ in terms of controlling where the fight goes (stand up or ground), due to emphasis on take-downs/take-down defense.
2.) Focus on control and dominate top position is better suited to getting back to ones feet if it does go to the ground.
2.a.) While submissions have their place, I am not interested in a mentality of staying on the ground and searching for submissions in a real altercation. Dangerous and stupid IMO... best to get up if you're in a parking lot or facing multiples. In my experience, wrestlers have a better ability to control this than bjj players, although Judo is more in line with wrestling here.
3.) I find the positioning and movement I learned in wrestling to be more suited to working for my weapon on the ground.... i.e. drawing my knife/gun... than what I learn in bjj, although this one is a closer call.
4.) I find the type of movement, positioning and control focused on in wrestling to be better suiting do striking on the ground, than the movement and positions we work in bjj.
I'm a big fan of wrestling (catch wrestling, collegiate wrestling) for MMA, but especially for SD. I find BJJ to be great for both in many respects, but I like wrestling for the above reasons.
Just my thoughts.