Chris Owings singled home the winning run and the Arizona Diamondbacks scored twice with two outs in the bottom of the ninth inning off new San Francisco closer Mark Melancon to beat the Giants 6-5 in a wild season opener Sunday. Derailed by a dreadful bullpen last year, the Giants started this season the same way - even after trying to fix the problem by bringing in Melancon on a $62 million, four-year contract.