The number of sponsors listed as available on your event site differ from the number of sponsors available that you have entered on the back end, because as sponsor records are added within the initiative, it affects the numbers viewable on the event site.  These frontend numbers are affected by both confirmed and pending sponsorships.

To view the sponsor records for the event, hover over the name of the event on the Kintera Thon page and select Bookkeeping. Click on Manage Initiative Records and then click the Sponsors radio button. Click Show All and you will see the sponsors for your initiative. To view the Pending Sponsorships, go back to Bookkeeping page and click the Pending Sponsorships link. There you will see the pending sponsors' names.

Available Sponsors Showing on the Backend - Existing/Pending Sponsors = Available Sponsors Showing on the Frontend