He only has 68 Major League plate appearances under his belt, but it's not too early to take a look at Bryce Harper's slugging percentage heat maps.
Harper hit his second HR yesterday on an Anthony Bass 1-0 fastball that was up and out over the plate:
That first HR notwithstanding, pitches down in the zone seem to be the one area that has given Harper some trouble. On low pitches, he's currently hitting .100 (2 for 20, 4 Ks) with a swing and miss rate of 29.8% and a chase% (balls swung at out of the strike zone) of 37.7%.
Again, it's only 16 games worth of data and thus too early to draw any meaningful conclusions. Nonetheless, tonight's starter for the Pittsburgh Pirates Erik Bedard may want to keep the ball down on Harper as much as possible.