Boston and Seattle were situated much differently on July 30 when the Mariners traded Noelvi Marte, Edwin Arroyo, Andrew Moore and Levi Stoudt to the Reds for righthander Luis Castillo.
At the time the Mariners had the league's fourth-best record at 54-47 in a quest for their first postseason bid since 2002. The Red Sox had the ninth-best record at 50-51.
This poster thought the Mariners would need to surrender Marte or Arroyo for Castillo and was surprised when both left in the deal. However, the Seattle farm system, which entered the 2022 season ranked among the best in baseball, had middle-infield depth that the Boston system lacked. The Mariners are high on shortstops Cole Young, Michael Arroyo and Axel Sanchez, not to mention Felnin Celesten, the second-ranked international prospect whom the M's signed last month. Those prospects may be distant but 28-year-old shortstop J.P. Crawford is signed through 2026.
Any long-term contract carries risks but the five-year, $110 million extension for Castillo stacks up well against the free agent contracts of starters Chris Bassitt, Taijuan Walker and James Taillon.