My summary: Reds got the best prospect of the 6 who appear to be traded in the deal. Dodgers' got better overall haul.
Jose Peraza keeps getting passed around like a White Elephant gift. He's a solid all-around player. Not a star, but very useful regular.
Remember how the Braves were huzzahed for the return they got on Shelby Miller? Flip it 180 degrees and that's feeling on Reds' for Frazier.
— Jeff Passan (@JeffPassan) December 16, 2015
[Answer: Because the front office felt constrained by the imbalance toward pitchers of the Reds current prospect list.