What kind of saxophone is being used here tenor or alto?

what kind of saxophone is Mark "Rodrico" Rivera using in this video (its still rock and roll to me - billy joel) ... a href="http://www.youtube.com/watch?v=5eAQa4MOGkE&NR=1" rel="nofollow"http://www.youtube.com/watch?v=5eAQa4MOG…/a