Mariners farm system remains elite

Despite the graduation of Colt Emerson, the club's system is high-end, with multiple above-average-to-plus prospects banging on the door of the big leagues.

The penultimate in-season Prospect Rankings Update includes a new prospect acquired at the trade deadline and updates on numerous high-ceiling bats.

Players’ overall future value (OFP, FV) dictates the rankings, so at times it doesn’t take much for the order to change. But sometimes movement takes months.

* Players currently in the majors do not qualify, even if they maintain rookie status (Brock Rodden).