Assuming that is your web page you linked to, I would not put in extra markup such as divs because the text is already contained in their own spans. Just add padding to each span
instead. Much more semantic then bringing in extra elements for styling and no need to change your hover event.
Edit: The main issue is your tooltip has been set to appear in the center instead of to the right like in your previous spans. This is causing the tooltip div to cut off half of the text.
To fix this change the javascript for all of the About Team Links:
From showToolTip('#lRG', '#dRG', 10, 'center');
to showToolTip('#lRG', '#dRG', 10, 'right');
This will cause the tooltips to show up at the end of the name instead of in the middle, and therefore stopping the tooltip div cutting the text in half.