And the final results of those calculations are here: http://tangotiger.net/bdb/lwts_woba_for_bdb.txt

The final weights that are calculated at FanGraphs are essentially the same as the ones presented in that file, though there might be extremely small differences. We don’t round numbers behind the scenes.

Second, we are not using RBOE because we just don’t have that.

Third, we only use NIBB when available. IBBs are not available before 1954 (or something like that), so before that we just use all BBs.

Finally, our career wOBA lines reflect the different weights for different seasons, so you would need to individually calculate each season’s wOBA and then weight each wOBA appropriately in a full season calculation.

Also, if you are doing a quick calculation for wOBA, I believe .+0.25 and -0.50 are better for the SB and CS. If you look at that file, most of the recent CS weights are near -0.50.

As you can see, there’s a bit of heavy lifting done behind the scenes mainly because we have to account for over 100 years of baseball, but if you use Tango’s standard calculation I think your numbers will come out very close to those on FanGraphs, assuming you change the weights on your CS and SB, mainly the CS one.

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