they mention this in geoge f. will's men at work book, as well. the book itself is a good read, although a little dated (1990). he interviews tony larussa, orel hershiser, tony gwynn and cal ripken jr about managing a game, pitching, hitting and defense, respectively. one of the first books that i've read from that time period that's not a bill james-related book that mentions OBP and slugging percentage. a good quote in the book is where either rene lacheman or jim lefebvre, who are larussa's coaches on the a's at the time, talk about runners "clogging the basepaths." it made me think of someone who we all hold dear to our hearts...funny that in one hand, they talk about OBP and SLG percentage in a good light but then bring up a crap theory like that.