There is a spot where if you click on the league button at the top middle of the screen and then go on the far right of the box that comes up, you click league history or something and that will show you all the past seasons.
I am thinking that this part of the game is still broken or incomplete tho. It doesn't show much from the past seasons and clicking back and forth thru the seasons can be awfully cumbersome and difficult so I assume that once the meat and potatoes of the game are fixed, the veggies will get sorted out
