Cubs' struggles continue

PHOENIX - Yusmeiro Petit became the latest starter to shut down sputtering Chicago, and the Diamondbacks made it two in a row over the Cubs with a 9-2 romp on Tuesday night. Conor Jackson drove in three runs with a solo homer and two-run double. Orlando Hudson added a solo shot for Arizona before leaving the game after being hit by a pitch in the eighth. Jackson's shot off starter Jason Marquis in the first put Arizona up 1-0, and his sliding score from second on Mark Reynolds' single put the Diamondbacks ahead 2-0 in the third. Stephen Drew doubled in the Diamondbacks' third run in the fourth. The Diamondbacks added two off left-hander Sean Marshall in the seventh. Drew beat out a double play, advanced to third, then scored on a wild pitch