As I mentioned in my first/intro OPS post, we’re looking at OPS differential by using expected (x)Homerun and expected (x)BABIP differentials. If you like Captain Planet or laser beams, or want to understand my general approach, then I recommend a gander. If you provide your email below, I can furnish the full list that you can sort. Wordpress doesn’t allow me to copy and paste it all pretty for you.

Let’s start with my xHR formula (PA*Ct%*OFFB%*HR/OFFB%). Here are the top 10 guys likely to drop off from a HR perspective: Albert Pujols, Adam Jones, Justin Morneau, Alexei Ramirez, Mark Reynolds, Charlie Blackmon, Ian Desmond, Brett Lawrie, Hunter Pence and Salvador Perez.

Here are the top 35 guys likely to drop off from a BABIP perspective that you actually might own (meaning I’m excluding the Martin Maldonados of the world): Josh Rutledge, Justin Ruggiano, A.J. Pollock, Josh Hamilton, Stephen Vogt, J.D. Martinez, J.J. Hardy, Eugenio Suarez, Hunter Pence and Matt Adams.

Looking at both xHR and xBABIP differentials, here are guys you might own that I would consider selling in OPS leagues based on their expected vs. actual OPS (the differential is in parenthesis just like this statement. See what I did here?):

Please, blog, may I have some more?

Let’s look at some potential homerun decliners based on the following “Power Score” or expected homerun (xHR) formula and compare it to their actual homerun totals. Here is the formula:

Plate Appearances(PA)*Contact Rate(Ct%)*Outfield flyball rate(OFFB%)*Homerun per Outfield Flyball ratio(HR/OFFB).

Make sense? Sure it does: How many homeruns does a player hit per outfield flyball? How much of their contact results in an outfield flyball? How much overall contact does a batter make when swinging the bat in a plate appearance? This should provide us with an expected HR total.

The below lists are ranked by the largest actual HR-expected HR differentials. Their HR related performance (PA, Ct, OFFB, HR/OFFB) is listed along with their average homerun and flyball average distance and rank.

Two contingencies worth noting at this time: 1) Our samples size still isn’t huge and 2) We’re not taking into account platoon hitters, i.e. Scott Van Slyke as a right-hand hitter only raking against left-hand pitchers. So when I extrapolate the data, keep this in mind. In other words, if Scott Van Slyke consumed more playing time against right-hand pitchers, there’s a good chance his performance/power would drop off.

Here are the top potential HR decliners (I think you will see the value of this xHR comp immediately):

Please, blog, may I have some more?