Yesterday, The Athletic's Keith Law ranked the Red Sox as the 2nd-best farm system in MLB.
ESPN's Kiley McDaniels ranks the Sox 4th:
"The Red Sox have also been on a bit of a heater in the player development space, but they should lose their top-five farm system status at some point in 2025 as this ranking is driven heavily by three players who are all in the upper minors. Outfielder Roman Anthony (who will be the top prospect in baseball when Sasaki graduates), shortstop Marcelo Mayer and infielder Kristian Campbell combine for $172 million of the $278 million of value in Boston's system. There's a real shot at least two of them, if not all three, graduate to the big leagues at some point during the season. There's a nice wave of talent behind them, though, with shortstop Franklin Arias and outfielder Miguel Bleis leading the position players and right-hander Luis Perales (who likely won't pitch in a regular-season game until 2026) leading a lighter group of pitching prospects."