Bill James / Paul Konerko
I'll let those who more closely follow stats explain this one to me. Bill James in his latest book, according to Phil Rogers, says Konerko is the worst defensive first baseman in baseball having cost the Sox 11 runs.
Now I only know what I see and that's the fact that Paul's glove consistently saves runs by his digging out bad throws particularly from Ramirez.
I do agree with James' other contention, that Konerko is the slowest runner in MLB over the last 10 seasons.