Ted Williams wrote in The Science of Hitting that the “slightly upward swing is the ideal path.”
It took years for Williams’ theories to be embraced but he has largely been vindicated in the modern era: Hitting the ball in the air has proven to be more impactful than driving it into the ground.
(If you think otherwise, you can yell at me on Twitter.)
Understanding a hitter’s swing path is one way to tell if they are capable of getting the ball in the air on a regular basis.
Minnesota Twins: Royce Lewis recalled James outman DFA'ed Per Aaron Gleeman. Lewis slashed .303/.443/.900 in his short stint in St Paul. While outman struggled at the plate. Lewis has been open and is expected to play 1st and 2 base in the long term.