Prospect Report: A new Top 10 includes arms on the move, lower-level kids performing

It was a truly tremendous first month for the farm system.

Considering what qualifies for realistic in baseball, the Seattle Mariners had what may be the best first month from their top prospects in over a decade, maybe two, and perhaps the best four-week period in at least a dozen years.

From a performance standpoint, very few of the club’s top talents aren’t putting up impressive numbers, including the entire …