Adding to my list of hidden stats is a real stat called Fan Save Value. It is a stat created by Ari Kaplan and I discovered it while reading the book Baseball Hacks by Joseph Adler. A post on fangraphs.com did a good job explaining it:
"FSV measures the difficulty level of each save by taking into account the lead with which the closer enters as well as the number of outs he must record to secure a win for his team. When all of the results are added together we are left with a number similar to the saves total but more indicative of how hard a closer had to work. The formula for FSV is (X/Y)/2, where X=the amount of outs to record and Y=the lead of his team. For instance, recording a one-inning save with a two-run lead would result in an FSV of 0.75; 3 outs divided by 2 runs ahead, then divided by 2."
How is it used? If Carlos Marmol has 12 saves with a FSV of 12.5, it means that his saves were harder than it seems. If Marmol has 12 saves with a FSV of 11.2, it means that his saves were easier than it seems. I'm still trying to understand it too but that's a rough idea of how the stat is translated. It's a very interesting stat and it is "hidden" stat (the writer of the Fan Graphs post called it a stat that is "not mentioned too much"). I needed some good stats for pitchers especially closers so I'll definitely keep track of this stat for all Cubs pitchers who record a save in 2009.
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