Flushing, NY (Sports Network) - Carlos Beltran belted a two-out, two-run homer in the bottom of the 13th inning, lifting the New York Mets a 5-3 win over the Arizona Diamondbacks in the middle test of a three-game series.

Mike Pelfrey was brilliant on the mound, tossing a career-high eight-plus innings. The former 2005 first-round draft choice -- ninth overall -- allowed one run on five hits with a career-high eight strikeouts against just two walks.

Billy Wagner came on in the ninth and gave up a three-run homer to Mark Reynolds, which tied the game. Claudio Vargas (3-2) tossed the final inning to pick up the win.

Beltran added a two-run single for the Mets, who snapped a season-high-tying five-game losing streak. Luis Castillo scored twice and Marlon Anderson knocked in the other New York run.

Arizona starter Brandon Webb went five innings and gave up three runs on five hits while fanning four. Edgar Gonzalez (1-3) yielded two unearned runs in 1 2/3 innings and was saddled with the loss.

Orlando Hudson finished 3-for-6 for the Diamondbacks, who have dropped three of their last four games. Reynolds' blast was his 15th of the season. He struck out in his other four plate appearances. Conor Jackson and Stephen Drew each had two hits.

With one away in the 13th, Castillo reached on Reynolds' fielding error. After David Wright fouled out, Beltran lined a 1-2 fastball over the wall in right- center field.

"The last pitch was my mistake," Gonzalez said. "Right in the middle you know. I tried to pitch up and in...but it was just there, so he hit me."

It was Beltran's sixth career game-ending home run.

"I just tried to hit the ball back up the middle...I just react to it, and as soon as I hit it I wasn't sure if it was going to be gone," Beltran said.

Leading 3-0, Pelfrey came out to start the ninth in search of his first complete game and gave up a lead-off single to Drew. Wagner was then summoned from the bullpen and struck out Hudson before yielding a double to Jackson. The veteran lefty then fanned Chad Tracy to bring up Reynolds, who worked the count full and launched a 96-mph fastball into the left field bleachers.

It was the second straight outing in which Wagner has blown a save. On Sunday, he yielded a pinch-hit three-run homer to San Diego's Tony Clark in the bottom of the eighth inning of the Mets' 8-6 loss.

Beltran drew a one-out walk in the home half and took second on a two-out single by Chris Aguila, who was recalled from Triple-A New Orleans before the game, but Tony Pena got Brian Schneider to fly out to end the ninth inning.

The Diamondbacks had the leadoff man reach base in each of the first three innings, but nothing materialized. In the fourth, Hudson ripped a one-out double into the right-center field gap, but Pelfrey induced a pair of groundouts to end the threat.

Meanwhile, Webb retired the first nine batters he faced, but the Mets jumped on the right-hander for three runs in the fourth. Jose Reyes beat out a well- placed drag bunt to open the inning. Castillo then hit a tapper to Webb and was credited with an infield single after first baseman Tracy dropped the throw. Reyes advanced to third on Webb's throwing error.

A groundout by Wright moved Castillo to second and Beltran smashed a two-run single to center field. Carlos Delgado then hit a scorcher off the right hip of Webb and the carom allowed Beltran to take third. Anderson followed with a grounder right to Tracy, who tried to look back the runner at third. He whipped the ball to second for out number two, but Anderson beat shortstop Drew's relay throw, scoring Beltran.

After Hudson's double, Pelfrey set down eight batters in a row before the Arizona second baseman singled to begin the seventh. Tracy drew a one-out walk to put runners on first and second, but the right-hander fanned Reynolds and Chris Snyder to thwart the rally.