MLB Trade Figures – Seattle Mariners’ Best Available Pitcher Land Trade Deadline in Deal for Luis Castillo

The trade: The Mariners take over RHP Luis Castillo from the Reds for SS Noelvi Marte, SS Edwin Arroyo, RHP Levi Stoudt and RHP Andrew Moore.

With the Mariners in a wildcard position and looking to end an epic playoff drought dating back to the Stone Age (at least in the sports years) of 2001, you knew CEO Jerry Dipoto would take a step — and maybe a big. He did not disappoint. The Mariners were believed to be one of the top contenders to take on Juan Soto, but Dipoto instead grabbed Castillo, seen as the best starting pitcher available (aside from a shocking Shohei Ohtani trade), and outbid teams such as the Yankees, Dodgers and Cardinals who were also in hot pursuit of Castillo.

Let’s get to the numbers.

The Mariners are 17-5 in the last 22 games to place themselves in the playoff position, but all five of those losses have come against the Astros since the All-Star break, with the Mariners scoring just 11 runs in those defeats. So that’s why they entered Soto; they must improve on offense that is eleventh in the American League in runs per game. But they faced another problem: Rookie George Kirby is approaching an innings limit, with 94 innings on the season after throwing just 67.2 in his first full season as a professional in 2021. Without a viable No. 5 starter, they did need another starter to eventually replace Kirby in the rotation.

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