There's nothing wrong with protecting your prospects. If the Washington Nationals hadn't held on to Trea Turner, they wouldn't have beaten the Cleveland Indians on Wednesday.
The Nationals have Turner, Lucas Giolito and a whole bunch of other guys they wouldn't trade for Aroldis Chapman.
They also have enough needs that they're going to have to trade for someone before August 1's non-waiver deadline. If not Chapman, then someone else.
If not now, when?
Heard that before? Maybe so, because Cubs president Theo Epstein used exactly those words in explaining why he traded big prospects for Chapman this week.