Last December, we introduced our preseason top 30 prospect rankings for the 2019 season all at once. It was a new format for us, but one that we liked; there was little suspense to be had for the top prospect in the Detroit Tigers farm system — spoiler alert: it’s Casey Mize again — and only our most fervent readers would have truly cared who made the last few spots on our list.
With the 2019 MLB draft and All-Star break now behind us, it’s time for an update. Several players have made their way onto our rankings, while others have either graduated or dropped off.