The Mariners teammates of traded closer Kendall Graveman did not like the deal:

The real question is if there is a magnitude of “win-now” additions in the next two days that will make the players and fans re-evaluate their bitterness over the shockingly mistimed Graveman trade. You can say the players need to let it go; as Servais said, they will move past it. But you simply can’t underestimate the human element. Mariners players not only watched a beloved teammate leave, to augment an opponent they were starting to believe they could catch for the division title; they also had to absorb what they perceived (correctly) as a trade designed more to help them in future years, at the precise moment they were looking for, and deserved, a boost now.

SeattleTimes.com

The deal does make sense for the long-term. When a team that hasn’t been to the playoffs forever sends a player to help a division opponent win now, however, the players have to wonder if the GM wants to win as much as they do.