Brothers was acquired in a November swap with the Rockies , and his release will open a spot on the Cubs ' 40 - man roster .
The Cubs have released left - handed reliever Rex Brothers , tweets Gordon Wittenmyer of the Chicago Sun - Times .
Brothers was acquired in a November swap with the Rockies , and Rex Brothers ' release will open a spot on Cubs Cubs ' 40 - man roster .
The Cubs have released left - handed reliever Rex Brothers , tweets Gordon Wittenmyer of the Chicago Sun - Times .