It will be several months before the big winners of Major League Baseball's 2018-2019 offseason are crowned. Every team has obstacles in its way to such an honor.

We focused on the biggest obstacle for each of MLB's 30 teams. For buyers, these cover payroll and farm system constraints, as well as more general difficulties. For everyone else, it's more about a shortage of valuable trade chips or an overall lack of direction.

We'll go in alphabetical order by city.

Arizona Diamondbacks: Uncertain Markets for Paul Goldschmidt and Zack Greinke

According to Jon Heyman of Fancred, the Arizona Diamondbacks are willing to listen to trade offers for everyone, including first baseman Paul Goldschmidt and starting pitcher Zack Greinke.