From the rulebook.

The actual statistics are what drives the game in most cases. Example: A pitcher may have a 7.3 pitching rating, but his actual statistics versus the type of batter (RH or LH hitter) he is facing, the batter's statistics, the park effects, and other pertinent factors determine the outcomes.


First, its all the stats of a pitcher, not just his WHIP, which isn't detailed enough. A quick way to evaluate a pitcher is to look at his OPS values vs lefties and righties.

So the actual stats of a pitcher, disregarding ERA is used. ERA than affects clutch. Its probably a 70%/30% ratio(actual stats/ERA) for purposes of deciding a pitchers value.


Example: Neutral park, average defense.

A pitcher has a 3.5 ERA, while his actual stats would predict a 4.5 ERA for that pitcher. You should then figure that he is around a 4.0 - 4.1 ERA pitcher.