Frankie and the Nervous Save

Recently, during one of the game threads on Halos Heaven, someone made a comment about Francisco Rodriguez getting a "nervous" save.  What was meant by a "nervous" save (NS) was that K-Rod always seemed to get the save, but he allowed base runners causing the save to be risky.  The comment got me to thinking about how often Rodriguez allowed base runners during his save opportunities compared to other closers.  I went through the top 20 closers (based on Saves) and counted the number of times during a save opportunity that the pitcher allowed more than one hitter to get on base, either by a combination of hits and/or walks.  Here's what I found: