Tue 8/7/12 10:36 PM

Chris Johnson blasted a pair of home runs and drove home five on Tuesday, powering the Diamondbacks to a 10-4 victory over the Pirates. Johnson was 0-for-3 and the D'Backs were trailing 4-3 heading into the eighth inning before it all erupted. His three-run shot off Jason Grilli broke a 4-4 tie, while his two-run blast in the ninth provided valuable insurance. Johnson has been out of his mind since being acquired by the Snakes, now hitting .345 (10-for-29) with five homers and 15 RBI over only eight games.