'Zack Greinke' photo (c) 2009, Keith Allison - license: http://creativecommons.org/licenses/by-sa/2.0/

Following the simple methodology of WHIP (walks + hits divided by innings pitched), I invented a new measure of a pitchers dominance called SWIP (it must be the mad scientist in me), in order to better understand which pitchers may possess the skills necessary to have success on a big league hill. Never heard of SWIP you say? Well I'm about to change that.


S- Strikeouts (abbreviated as K) W- Walks (abbreviated as BB) IP- Innings Pitched

Numerically speaking, the formula for SWIP works along the same lines as WHIP. SWIP is determined by the following equation:

Strikeouts minus Walks divided by Innings Pitched equals SWIP.

SWIP = (K – BB) / IP

Another way to look at this is to say that for each positive result, the recording of an out in the form of a strikeout, the pitcher receives a (+1). For each negative encounter, in the form of a walk, he receives a (-1). Simple enough right? Here is an example of how you can figure out SWIP so you can see what I’m talking about (and yes, it really is as simple as it sounds).


Mike Leake had 118 Ks and 38 BBs in 167.2 IP in 2011. (118-38) / 167.2 80 / 167.2 0.48 SWIP

Leake’s SWIP for the 2011 season was therefore 0.48.

Though SWIP is recorded in the same manner as WHIP, the way to read the results is slightly different. Whereas the lower the WHIP the better one has performed, SWIP works in the opposite direction: the higher the SWIP the better (it should also be pointed out that there are some limitations to SWIP).

Here is a rough estimate of what the results mean to help you to put things in perspective, a key if you will.

.90 and Up: Excellent season. Hall of Fame level. .70 to .89:  An all-star performance. Worthy of Cy Young consideration. .50 to .69:  Borderline all-star to decent starting pitcher. A guy you’d like to have on your staff. .35 to .50:  A guy who should be nothing more than the 3rd or 4th starter with his club. .20 to .34:  His major league days are likely numbered. Below .20: Minor leaguer in training.

Let’s take a look at how all major league hurlers performed in 2011.

34,448 Strikeouts 15,018 Walks 43,527.1 IP

So in order to find out the major league average for SWIP during the 2011 season we simply plug the numbers into our simple equation.

SWIP = (K – BB) / IP (34448-15018) / 43527.1 19470 / 43527.1 0.4473 SWIP = 0.45

Last year’s 0.45 mark is a major league best in the 21st century as the rate keeps inching upward.

2011: 0.45 SWIP 2010: 0.43 SWIP 2009: 0.39 SWIP 2008: 0.38 SWIP 2007: 0.37 SWIP 2006: 0.37 SWIP 2005: 0.36 SWIP 2004: 0.36 SWIP 2003: 0.34 SWIP 2002: 0.35 SWIP 2001: 0.38 SWIP 2000: 0.30 SWIP

Here are some notes on the pitchers who tossed at least 160-innings last year.

Here are the leaders for the 2011 season (minimum 162 innings)

0.91 – Zack Greinke An elite K-arm last season, Greinke led all starting pitchers with a 10.54 K/9 mark, and he walked about a batter fewer, per nine innings, than the average big league arm (2.36 BB/9).

0.84 – Cliff Lee When you strikeout more than a batter per inning (9.12 per nine), and walk only 1.62 per nine, you are an elite performer.

0.83 – Clayton Kershaw Massive Ks are his calling card, and last season he walked a mere 2.08 batters per nine.

0.79 – Roy Halladay Concerns about his velocity in spring notwithstanding, the guy just doesn't beat himself (1.35 walks per nine).

0.75 – Justin Verlander Huge arm, huge K totals and a better than expected walk rate (2.04 per nine).

0.71 – Yovani Gallardo, CC Sabathia, Madison Bumgarner A young K artist, the most consistent lefty in the game, and a young lefty from the NL West.

Some names that stood out, for good or bad.

0.62 – Tim Lincecum A four year low in K/9 coupled with a four year high in BB/9 has his SWIP headed in the wrong direction.

0.56 – Ted Lilly Always overlooked on draft day. Lilly simply goes out, doesn't beat himself, and always seems to strike out more batter than people realize.

0.52 – Gio Gonzalez, Matt Cain Two young arms who ply their trade in the Bay Area. Gio G is the higher upside K artist, but Cain's ability to walk fewer batters has them tied in this measure.

0.43 – Edwin Jackson What a shock. Edwin Jackson being average at something (recall that the big league average was 0.45 in 2011).

0.25 – Ivan Nova I wrote about Nova in this Player Profile. SWIP speaks to the concern I expressed there.

0.24 – Jeremy Hellickson I wrote about Hellickson in this Player Profile. SWIP speaks to the concern I expressed there.

Tomorrow I'll discuss those pitchers who didn't throw than 160 innings in 2011, and I'll also have the entire list of hurlers who threw at least 40 innings ranked by their SWIP marks.

To sign up for your baseball league this year make sure you check out Fleaflicker.

By Ray Flowers


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About Ray Flowers

The co-host of The Drive on SiriusXM Fantasy Sports Radio (Sirius 210, XM 87: Mon-Thurs 7 PM, Fri. 9 PM EDT), Ray also hosts a show Sunday night (7-10 PM EDT). Ray has spent years squirreled away studying the inner workings of the fantasy game to the detriment of his personal life. Specializing in baseball, football and hockey, some consider him an expert in all three.

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