Not everything goes according to plan during the MLB offseason.

For some teams, it's time to make a free-agent splash and to fill roster holes ahead of a push toward contention.

For others, it's a source of disappointment.

Whether it's because a club whiffed on a top free-agent target, failed to address a glaring need or simply didn't do anything at all, the hot stove can be a letdown for a multitude of reasons.

Ahead we've highlighted the biggest disappointments of the 2019-20 MLB offseason.

Pittsburgh Pirates: Fail to Embrace a Rebuild

After the Pittsburgh Pirates' disastrous second half resulted in a 25-48 record on the field and in-fighting by the players off it, the organization gutted its management team.