How Strong is the Correlation Between Pitch Counts and Injury/Ineffectiveness -- Stat of the Day June 11, 2000 - BBBWHere I compare two sets of pitchers who debuted from age 20-24. Those with 27+ batters faced per start and those with fewer. I then compare their 20-24 stats with how the two sets did between their 25-30 years as well. Both sets were early debuters, one set was worked less hard than the other.