Kevin Kiermaier is the epitome of going all out. If he draws a walk, he flips his bat and sprints to first, a practice that he's been doing since college. If he hits a ground ball out of the infield, he usually tries for a double, thanks to explosive speed, which helps both his offense and defense.
Since the beginning of last season, Kiermaier is tied for first in the major leagues in triples. The person he's tied with, Adam Eaton, has nearly 250 more plate appearances during that span. His speed actually gets him in trouble sometimes as he runs so hard that he occasionally overslides bases and has to work to maintain contact with the base.