http://iscoresports.com/

How can I go back and add prior season games to the application? Is there a way to upload stats from a file (i.e. excel or text)? I am trying to have career stats.

With basketball on the iPad, there is a tab selection on the main scoring screen called "Stats" mode. With this entry mode, you can quickly just enter the stats for each of the players for a game. So you can create your historical games, go to the Stats mode, and just select each player and enter their complete game stats.