## Thursday, March 21, 2013

### OBP - On-Base Percentage

On-base percentage  is a measure of how often a batter reaches base for any reason other than a fielding error, fielder's choice, dropped/uncaught third strike, fielder's obstruction, or catcher's interference.

OBP is basically measuring the amount of times a hitter does not make an out.

On-base percentage is calculated using this formula:
$OBP = \frac{H+BB+HBP}{AB+BB+HBP+SF}$
where

### On-base percentage - Wikipedia

By Matt Snyder, Sept 16 2012 | cbssports.com

"Unlike batting average, on-base percentage doesn't ignore working the count to earn a walk, stepping into an inside pitch or being such a terrifying hitter that one gets pitched around and/or intentionally walked often. There are four players with more than 2,000 career walks: Barry Bonds, Rickey Henderson, Babe Ruth and Ted Williams. And we're supposed to ignore that and concentrate on batting average? In its purest form, OBP is basically measuring the amount of times a hitter does not make an out. With only 27 precious outs in a regulation game, this stat is paramount. That this isn't mainstreamed as more important than batting average makes very little sense to me."
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