It’s a small sample, to be sure, but Hernandez demonstrated huge power potential with eight home runs in a September call-up last season, and he’s among the leaders in barreled balls since that time, per Statcast. No hitter who has put at least 10 balls into play thus far in 2018 has averaged better than Hernandez’s 99.3 mph exit velocity.
https://www.mlbtraderumors.com/
Is there a more objective measurement than exit velocity?