BB stands for Barry Bonds
Barry Bonds in 2004 was intentionally walked 120 times. This is far and away the record. The only player who has ever been walked HALF that many times in a season is also named Barry Bonds.
He has the top three spots on the intentional walks list, six of the top 10 spots, the only other two names in that top 10 are Willie McCovey and Albert Pujols.