The common way to do that is with line drive percentage. The quick and messy way to estimate what BABIP "should" be is to add .110 or .120 to LD%, but that's really just an approximation. Using that .110 to calculate, here's the Cubs so far in BABIP: http://i.imgur.com/ksX7Tmd.png So of regulars, Castro and Castillo have been the "luckiest", and Rizzo, DeJesus, and Soriano have all been very "unlucky". i don't like this because it ignores a ton of relevant data (i trust you would agree, but likely used it for the sake of simplicity) using an updated method: http://www.beyondtheboxscore.com/2009/11/10/1124792/a-new-xbabip-calculator it comes out like actual babip (xbabip) Rizzo: .185 (.333) Castro: .348 (.338) Castillo: .444 (.346) DeJesus: .310 (.383) Soriano: .350 (.402) Schierholtz: .379 (.354) .333-babip Rizzo would have roughly a .259/.364/.520 line right now