Is that actually possible? I don't know about other sports or the US, but in Germany or England a football club's season ticket will be some kind of plastic card with your name on it.
They may not necessarily check ID before a match, but you'd still need to trust a stranger with it. However, I know Arsenal runs a ticket exchange to let season ticket holders sell off individual matches (at a fixed price).
In the US season tickets (in my experience) are only slightly different from other tickets, in that they're paper with a coupon that may or may not be torn off when you enter. Season tickets have nicer printing and logos and come in a nice folder.
