cool new defensive metric: Jumps - It's defined as: "How many feet did he cover in the right direction in the first three seconds after pitch release?"
2019 Jump leaders (leaderboard)
+3.0 feet above average -- Kevin Kiermaier, Rays
+2.9 feet above average -- Guillermo Heredia, Rays
+2.0 feet above average -- Leury Garcia, White Sox
+1.9 feet above average -- Robbie Grossman, A's
+1.7 feet above average -- Harrison Bader, Cardinals
+1.7 feet above average -- Jackie Bradley Jr., Red Sox
+1.5 feet above average -- Ender Inciarte, Braves
+1.4 feet above average -- Cody Bellinger, Dodgers
https://www.mlb.com/news/new-outfield-jump-burst-route-metrics-at-baseball-savant