Rapid Reaction: Diamondbacks 5, Mets 4

WHAT IT MEANS: The Mets have their longest losing streak of the season as dropped their fourth straight in a 5-4 loss to Arizona. The bullpen blew a two-run lead in the eighth.

IT STARTED WITH AN ERROR: An error by Ike Davis opened the door to Arizona's three-run rally in the eighth that put Arizona ahead for good. Manager Terry Collins tried mixing and matching relievers, but it didn't work. Jon Rauch had arguably his worst outing as a Met, although the box scored wouldn't show it, blowing the save while Arizona sharply hit balls all over the field. Rauch let both inherited runners score and then allowed the winning run.The Mets need their bullpen to be able to hold their leads and lately it hasn't done the job.

G IS FOR GOOD: Dillon Gee pitched six effective innings and left in line for the win, but he ended up with a no-decision as the bullpen imploded. He worked himself into a couple of jams, but was able to make the big pitch when he needed. His only blunder came when he served up a two-run homer to Cody Ransom in the second inning. Gee yielded just four hits, tied for his fewest allowed on the year. He's still 2-2 on the season.

FOUR IN THE THIRD: The Mets erupted for four runs in the third, but that was their offense on the night. After going 0-for-4 with runners in scoring position the first two innings, Scott Hairston, Ike Davis and Andres Torres each drove in runs to give the team a 4-2 lead after three. The Mets put runners on base consistently throughout the night, but struggled outside that one frame to bring them home. One more big hit here or there would have allowed the Mets some separation from Arizona during the course of the contest.

SETTLED ROTATION: Before the game, Collins announced that Miguel Batista would take Mike Pelfrey's spot in the rotation. That spot has been previously filled by Chris Schwinden, but he was demoted to Triple-A Buffalo after two ineffective starts.

WHAT'S NEXT: The Mets will try and reward Johan Santana (0-2, 2.25 ERA) with his first win of the season when he takes on Patrick Corbin (1-0, 4.76) at 4:05 p.m. The Mets also will be looking to avoid a five-game losing streak.