The 2025 MLB trade deadline has passed and the Mariners offense has a new bat. There is one Mariners trade deadline concern to look at.

The whirlwind of activity on the MLB trade market each summer not only sees contenders shore up their rosters for the stretch run, but also leads to a significant shuffling of the prospect landscape.

What the 2025 Major League Baseball trade deadline lacked in blockbusters it made up for in volume. From the first deal on July 24 to the last at 5:59 p.m. ET on July 31, teams made 63 trades and exchanged 179 players (including those to be named later).