I'd start out by questioning the equivalency the author is expecting to get from starters & relievers. Reliever WHiPs are sometimes as low as they are because they occur during specific match-ups, where in this case of starters going shorter and relievers going longer, there'd no longer be the ideal match-ups or the short stints. His projections assume that altering the way pitchers are used would not at all change the output you'd get from them. Seems to me also that the plan would tend to get fouled up by the inevitable hurler who gets bombed at which point you're either getting lots of runs scored against you while waiting for his turn to come up in the batting order before you replace him or, by quickly replacing pitchers who are pitching well and replacing even more quickly those not pitching well, you're forced into using most of your staff just to get through one game and then needing most or all of them to do it again the next day. I've long thought that those advocating for this sort of revolving staff are too quick to assume only the upside of the outcome, a bit ironically in the same way that sac bunting advocates do. MLBN host Brian Kenny is a big 'Kill the Starter' guy (along with wanting to kill the 'Win' as a stat, kill the 'Save', etc.) and talks about this sort of stuff in a recent book. He didn't tie his plan specifically to never hitting the pitcher (which IMO would just play right into the hands of the universal DH crowd) but more as a way to proactively remove starters prior to their inevitable decline due to elevated pitch count and/or their 3rd/4th time through the lineup. [fimg=150:36i4es3l]http://covers3.booksamillion.com/covers/bam/1/50/110/633/1501106333.jpg[/fimg:36i4es3l]