That's exactly why it works the way I described. Once upon a time owners did that...in fact it was known as the "Milacki strategy."
Here's the brief note from WIS's update on 4/12/07:
- Improved range ratings using a hybrid of the relative range factor detailed in the Fielding Bible
- Fatigue adjustment for the playoffs (i.e. no more Bob Milacki strategy)
They didn't provide additional detail there, but from various sources over the past few years it's been determined that the 95% rule is in place.