Just look at the tabs yourself. Most are relatively small drop downs, and they close when your mouse leaves the area... no big deal when you accidentally scroll over, and easy to find what you want when you mean to scroll over.
The "TOOLS" tab literally takes up the whole page and you have to make an effort to find a space to get your mouse outside it to close. I have to move my mouse alllllll the way down to the bottom of my screen to get out of it. There is just too much stuff in that tab (4 columns listing 50 (FIFTY?) links)... to the point it isn't a "tab" at all, it is an entire page.
I think you can make that tab way less busy by removing a lot of the lists, thus shrinking the tab, thus solving the issue. Maybe just make the 4 Column titles go to a page with the various links there. Or make more tabs and give the draft, in season, dfs, and statisitcs their own tabs.