Deja vu.
The 2018 Seattle Mariners posted an 89-73 record with a negative 34 run differential. The 2021 Mariners are 87-70 with a negative 52 run differential.
Despite the 89 wins, following the 2018 season Seattle management decided to "step back" by trading Edwin Diaz, Robinson Cano, James Paxton, Jean Segura, Mike Zunino and Alex Colome. The reported reasoning was that the Houston Astros and Oakland Athletics appeared too formidable to overtake in 2019 or 2020.
Fast forward to today and the Athletics seem vulnerable with an arbitration class that the A's probably can't afford. The Astros are no longer the club that finished 14 games ahead of the Mariners in 2018.
Historically the Mariners have not had the fiscal constraints of the Athletics. Like the 2011-13 Astros, who were criticized for low budgets while losing 324 games, the Mariners have been saving their money for the appropriate time to spend.
This offseason may be the time for the Mariners to spend on the free agent market to complement the developing core.