Keston's dazzling 2019 rookie season came as no surprise to those who watched him rake at the U. of California Irvine, where he batted .375 with a .466 OBP over three seasons. Chosen by Milwaukee with the ninth overall pick of the 2017 MLB Draft, he was deemed the top prospect in the organization by Baseball America a year later. Revealing a compact stroke and an ability to barrel pitches anywhere in the zone, Keston finished the year with the second-highest slugging percentage (.570) ever by a Brewers rookie in 80-plus games. Highlights included a walk-off longball and a 15-game hitting streak.