Split Options

The Split Options dialog makes it possible to specify the exact adjustments made to a batter's event probabilities based on the handedness of the batter and the pitcher.  You can access the Split Options by selecting the Options->Split Options menu item.

The Split Options dialog box allows you to specify the adjustment to event probabilities for a batter based on the pitcher they are facing.  Adjustments are specified by entering a number between 1 and 999, where 1 represents and adjustment of 0.1%.

For example, in the figure above when a right-handed pitcher faces a right-handed batter, the batter's SO probability will increase by 4.1% and their HR probability will decrease by 1.4%.  However, when a right-handed pitcher faces a left-handed batter, the batter's SO probability will decrease by 8.1% and their HR probability will increase by 2.5%.

The way in which the handedness of the batter and pitcher affect game play varies depending on the baseball era.  For this reason, users of Digital Diamond Baseball way wish to maintain several different sets of split options.  To help with this, the Split Options dialog makes it possible to save options to a file and recall them at a later time.  To create a new set of split options, click on the New... toolbar button and provide a name for you new set of options.  Next, enter the new values and click on OK to save your changes.  You can specify which set of options you want to use when you are playing games by selecting the set ing the Split Options File drop-down list box.

The default values listed in the Split Options dialog box were calculated using data from the 2001 to 2010 major league seasons.  Special thanks to Ken Schmidt for providing these numbers.