Is anybody aware of any websites that post league-normalized statistics (e.g. OPS+, ERA+, etc.) for the current minor league season. Since some leagues are more favorable to pitchers or hitters and I was looking for a good way to put some the stats we see in the daily box scores in perspective. I've checked the usual web-locales such as BP and Fangraphs but haven't found anything. Perhaps repeatedly calculating league-average statistics is too gruesome of an endeavor?