STARTERS: BPV leaders, April 2023

Let's begin our monthly look back at the starting pitchers who posted the best skills in the prior month.

First, let's set some baselines by showing the ERA, WHIP, and BPV by month that have been posted by starting pitchers during April since 2018:

These are the three primary reasons for the erosion in ERA and WHIP so far in 2023:

  • Elevated hit rate (29% to 31%)
  • Elevated home run rate (1.0 HR/9 to 1.3 HR/9)
  • Elevated home run per flyball rate (10.6% hr/f to 12.8% hr/f)

These were the aggregate stats and skills posted by starting pitchers in April 2023, segregated by league:

Here were the most skilled starting pitchers during the month of April 2023:

Let's take a closer look at some of the more interesting skills leaders from April.


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