The first Diamondbacks trade domino has fallen, as first baseman Josh Naylor is heading to the Seattle Mariners.

The Seattle Mariners have kicked off MLB Trade Deadline fireworks by swinging a deal for Arizona Diamondbacks star Josh Naylor.

If the Chicago Cubs had their way, a third baseman, starting pitcher, and reliever would come their way at the trade deadline. While the perfect storm is unlikely, the Cubs should take as aggressive an approach as possible.

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The Diamondbacks have shown they would also not like to put Gallen in the discussion. Arizona has been reluctant to make any trades, as the team has hoped it would still remain viable for a playoff berth before the end of July. It looks more unlikely that Arizona will have a chance this season to play in the postseason.

Zac Gallen was a huge part of the Arizona Diamondbacks' success in years' past. In a career-worst year, could he get a fresh start with a new team?

The Red Sox would benefit from adding a starter after losing Hunter Dobbins for the year due to a torn ACL and Tanner Houck remaining on the injured list after his rehab assignment. Lucas Giolito and Brayan Bello have shown signs of improvement, but starters not named Garrett Crochet have struggled to find a consistent groove.

Pregame analysis and predictions of the St. Louis Cardinals vs. Arizona Diamondbacks MLB game to be played on July 20, 2025 on ESPN.