Entering the season, the High-A Stockton Ports had the deepest starting rotation of any of the Oakland A's minor league affiliates. Four of them were on our preseason Top 30 prospect list, and the other was a recent 3rd-round draft pick. There was a legit prospect on the mound every day.
We're getting down to the final couple weeks of the MiLB season now, and a lot has changed. Daniel Gossett quickly rode a new cutter to dominance and wound up promoted to Double-A, and Heath Fillmyer soon followed him. Zack Erwin went the other direction, flaming out hard enough to get the boot down to Single-A Beloit.