What I don't get is that Gagne is throwing the ball well (or... decently anyway) - fastball in the low-middle 90's, good changeup. If you look at the pitch location from that HR, it was on the inner 1/2 of the plate about mid thigh. At 92MPH, Juan Pierre could probably hit that one out. 92 MPH at that same plate location, but around the knees is a whole different ball game, but leaving pitches around the thigh or waist in MLB is asking for a HR.