When the Kansas City Royals were looking to trade Kelvin Herrera for prospects in 2018, he was a top bullpen arm. After the Royals moved him for Kelvin Gutierrez, Blake Perkins, and some 17-year-old kid that no one had ever heard of, many of us were disappointed. But there is a real chance now that the kid no one had ever heard of ends up being the real value in that trade.
When the Washington Nationals brought in Kelvin Herrera to pitch badly for them down the stretch in 2019, they traded away a kid that had been born in the year 2000 and had pitched a grand total of 3.