Prior to 2018 Spring Training, the Miami Marlins traded Christian Yelich to the Milwaukee Brewers for Monte Harrison, Lewis Brinson, Isan Diaz, and Jordan Yamamoto. Yamamoto looks to be one of the five pitchers set to begin the 2020 season in the starting rotation. Diaz and Brinson each hit .173 last season, but are hoping to do better this year.
That leaves Harrison as the lone player to still be awaiting his MLB debut of the four. He was set to come up during the second half of the 2019 campaign, but a stint on the injured list put a stop to that.