Daniel Nava’s hamstring strain
This first reason is pretty obvious, but it’s a reason nonetheless. Daniel Nava landed on the disabled list Wednesday with a hamstring strain. He isn’t eligible to be activated until Aug. 2, and it’s unlikely a team will want to trade for Nava while injured.
Before the injury, Nava could conceivably be a trade asset. In 65 games (starting 32), Nava has a .303/.400/.408 line with 10 extra-base hits, a 13.3 percent walk rate, and 18.3 percent walk rate. He has played mostly left field this season, although he has seen time in right and at first base.
Considering Nava’s ability to reach base this year, a team could have pushed to acquire Nava for a lower-level prospect so he could be on said team’s bench in a playoff run. This may still happen in August, but he will have to pass through trade waivers first.