Nats acquire Kelvin Herrera from Kansas City

The Nationals bought a rental player for three highly regarded prospects.

MLB Playoff Race: Trade season is upon us

Doolittle and Madson are now Nationals, Quintana is now a Cub; and the non-waiver trade deadline is still 14 days away. The next few days is going to determine which teams are buyers and which are sellers in the playoff race.