Look at Beltre's early-career numbers (Dodgers stadium notwithstanding), and scouting reports for both players. In-his-prime Adrian Beltre is exactly what WMB could become if he refined his plate approach, but with inferior defense. The Sox would be wise to exercise patience with the kid lest reach his ceiling with another team and make the Sox look like fools. You can teach and fix approach, but you can't teach tools.