Before this season began, the Orioles had what many outlets recognized as the #1 farm system in baseball. At one prospect site, MLB Pipeline, they were on a streak of six straight rankings (counting preseason and midseason updates) as the top farm system.
That particular streak will probably not continue any farther. Players who have graduated from prospect status (130 AB for hitters, 50 IP for pitchers, 45 days on the MLB roster for either) no longer count towards the rankings. Others may soon be traded, depending on who Mike Elias likes out of the available players on other teams.