Looks like an offensive lineman; big upper half, hulking shoulders, limited dexterity; heavy legs, limited athleticism; high-maintenance body does not project to age well.
10 games May-July 2015
Lancaster JetHawks (High A, Astros)
Hard-worker, nose-to-the-grindstone type, has shown notable growth and offensive development this season.
Slight crouch, wide base; moderate load, hitch; high back elbow, rigidity in the forearms and wrists; has quieted lower-half noise, mild leg lift; improved consistency between shoulders and hips; leveraged swing with average bat speed; shows balance with moderate barrel control; aggressive in-zone, moderate command of the zone; tracks well, no platoon issues.
Above-average raw, leveraged swing; average bat speed limits in-game utility, strong enough to drive it out to all fields; game power geared to the pull side, can extend and take it out to center.
Bottom of the scale runner, 4.66 average to first; no second gear, true base-clogger.
Choppy footwork around the bag, very limited range and mobility; below-average reaction times, average hands on balls he can reach; slow to the bag, limited stretch; solid on short-hops, average receiving.
Deliberate actions, slow in setup; average velocity to second; struggles to control body on tosses to first, below-average accuracy.
McDonald is an all-bat prospect with very little margin for error; he demonstrates a solid approach at the plate, commanding the zone well and attacking decisively when he commits. He has shown commendable growth in toning down some of the early season noise in his swing, better engaging his lower half as the year has progressed and making the swing less dependent on raw strength. The power he has should play, but I worry about his ability to consistently handle high-octane velocity on the inner half.
Very limited defensive profile leaves him best-suited as a DH prospect, putting enormous pressure on the hit/power combination to max out. Low-impact player may provide some value as a power bat on the bench or a second-division DH if he hits his ceiling in the batter's box.