WHIP

Walks plus hits per inning pitched, or WHIP, is a rough measurement of how many base runners a pitcher is responsible for allowing per inning pitched. WHIP gained popularity from its use as a standard pitching statistic in fantasy baseball leagues. While not as analytically useful as other stats, its popularity and emphasis on peripheral stats give it value.

WHIP = (Walks + Hits) / Innings Pitched

A WHIP of 1.0 or below often ranks among the best in Major League Baseball. In mid-2004, the average MLB pitcher had a 1.41 WHIP.