A pinch-hit RBI single in the 14th inning by Chris Snyder gave the Arizona Diamondbacks a 4-3 victory over New York on Wednesday night, completing a three-game sweep of the fading Mets.

Snyder, the last position player available for Arizona, hit a 2-2 pitch from Fernando Nieve (2-4) over the head of left fielder Jason Bay to bring home Justin Upton, who had led off the inning with a double.

The Mets fell to 1-6 on their 10-game Western trip after the All-Star break and remained 6 1/2 games behind first-place Atlanta in the NL East. They finish the trip with three games against the Dodgers in Los Angeles starting Friday night. Five Arizona relievers shut out New York on one hit over the last eight innings. Blaine Boyer (2-2) was perfect over the final two, striking out two, to get the victory.