Interestingly enough, I see no bar whatsoever in IE and I see a bar on the right in Firefox.
Nonetheless, there's probably not a way to fix whatever the problem is you seem to be seeing. It's almost definitely caused by poor coding on ESPN's part...one of the ways MS holds onto the browser marketshare by perpetuating non-standard compliant coding methods
Unfortunately, some people still follow them.
Honestly though - the only difference I saw was that Firefox had a section of the page that IE didn't even show. So I'm not sure exactly what you mean.