The Chicago Cubs are all over the trade market searching for upgrades. While they can shoot high for National League RBI leader Eugenio Suarez to occupy third base or convince the Padres to part ways with Dylan Cease,

One of the biggest factors when assessing a MLB player's trade value is whether he is just a two-month rental for the stretch run or if he is under club control beyond the current season.

Pirates pitcher Mitch Keller is regarded as one of the top players available in the pitching market. That may no longer be the case.