As a marketing person who has sponsored quite a few events in billiards as well as a number of other industries, I can give you some insight into what I look for in a pitch (please note however that I am not looking for pitches, as PoolDawg is not currently looking to sponsor any additional tours beyond the WPBA at this time).
This will not be the case for everyone, but for me all I focus on is ROI. I want to know exactly how I'm going to get a return on my sponsorship investment. I know exactly how much in sales I need to generate from a campaign or an ad spend, so I want to hear how the event is going to get me to that number.
Beyond ROI, there is also a branding aspect to most sponsorships. Because branding is often difficult to measure, I have to come up with core metrics to look at and attach a dollar value to those metrics. How many people are going to see the event? Are the people watching in my core demographic (keeping in mind that there are huge differences in customer segments within the billiards industry). If it is being televised, what is the expected viewership? Are you contracted for 2nd and 3rd airings, etc. What else are you going to do to get my brand eyeballs other than putting an arena banner up. Once I have an idea as to how many eyeballs I'll be getting, I can then attach a conversion number to those eyeballs and make some basic assumptions about how many customers I will acquire and add that to my overall ROI assumptions.
Before you make a pitch, look at each of your sales points and honestly ask yourself if there is real value there. Put yourself in the shoes of the potential sponsor and see if you think the pitch is attractive. If a key point to the pitch is something along the lines of a verbal announcement at an event where 200 people are in attendance, think about it from a CPM (cost per thousand impressions) perspective. How many impressions are you going to get your sponsor and how does that measure up to other forms of promotion (radio, TV, print, etc)? Keep in mind that PR is part of this calculation. If you are going to be able to get your press release out to AZ, Billiards Digest, etc. and you are attaching the sponsors name and links, there is value there. In some cases, the value of the PR will exceed the value of the arena banner or the verbal announcement.
Hope this helps and sorry about the long rambling response.
Mike