Not sure what the hell Don Mattingly was thinking here, but putting in Adrian Gonzalez as a DH (in order to wedge Alberto Callaspo into the lineup, for some bizarre reason) was absolutely not the right move.
Gonzalez is a career .293/.365/.501 batter. He's .295/.369/.506 as a 1B, where he has played in roughly 95% of his plate appearances. As a DH, Gonzalez is a woeful .248/.285/.418--all numbers which stand to further degrade after today's 0-for-4, 4 LOB, 1 GIDP play. Why Mattingly thought this was a good idea for Gonzalez at DH is beyond me.
But wait, a NL team uses the DH to sneak in another potent bat, right?