I've been working on a little section for 2013 Summer Koshien Stats. It is still far from done, but I thought I'd go ahead and open the section up to anyone that might be interested. It contains stats from the start of the tournament through to August 15. The index page will give you the full list of players that have appeared in tournament. Clicking into the team will show the roster for that team. Clicking into inidividual names will give you their stats for the tournament. You can also click into individual games for hitters to see more information about their at bats.
If you have any questions, comments, or suggestions, please feel free to either post it down below in the comments, or drop me an e-mail at gen [at] yakyubaka dot com.