yes he dropped to 9 three weeks ago but the drop to 8 was this week.
He dropped to 9 the week before the all-star break. There's another thread that documents that.
Ybarra was at 8 before this week because the week he dropped the only option was a lower rated coach, and last week I hesitated a moment before choosing Rosales because I trained stamina and thought there would be no difference in coaching skill for that. But the lower cost analysis convinced me to make the move.
Even if you are right about timing (which I demonstrated not to be true), why didn't you switch to Rosales this week? The lower price/higher rating argument still holds.