Friday night in his fifth outing of the season Mike Pelfrey became the ace the New York Mets expected at Citi Field. Against the Arizona Diamondbacks, where he had an unsuccessful 0-5 career mark, Pelfrey had his command and he did it not feeling well on the mound. But his seven innings of good pitching helped the Mets get their second consecutive win, 4-1, as New York took the first game of a three-game series.He overcame a first inning jam with one out and runners on first and third. And to Mets manager Terry Collins, that was impressive. “That first inning set the tone for the whole club,” said Collins.  He would pitch seven good innings and an Ike Davis go-ahead two-run homer in the seventh inning that was reviewed was enough to get Pelfey (1-2) his first win of the season.Palfrey gave up five hits and a run, walked two and struck out four. The command on his fastball and use of other pitches got him through the evening as he fought a stomach ailment that developed prior to the game. Said Pelfrey, “While in the pen, I said, ‘I’m just going to throw strikes. I don’t feel great. We’re going to grind through this and we’re going to get through it.’”“If he continues like this I don’t think there’s any question he will continue to get people out,” said Collins. Pelfrey used a variety of pitches including the sinker and the fastball to perfection. “He had a great game,” added Collins.The bullpen tossed two scoreless innings, including a perfect eighth from Jason Isringhausen. Francisco Rodriguez got his third save with a scoreless ninth walking two and striking out one. Isrinhausen has become the new man for the Mets out of the pen in late innings now that Bobby Parnell is on the 15-day disabled lit.“He’s not afraid and he’s making the pitches,” commented Collins about the veteran Isringhausen who was a spring training invite and was signed to a minor league contract before being called up. “He’s going to be big for us,” he said.And for the second consecutive game Davis got the home run, the second go-ahead home run for the Mets in consecutive games. At first the ball hit by Davis to center off eventual loser Esmerling Vasquez (0-1) was ruled a double that hit above the orange line on the black wall. Collins asked for a review and it was ruled a homer, his third of the season and team leading 16th RBI.Prior to the home run, the improved Diamondbacks pen had not allowed an earned run in the last six games. Starter Joe Saunders who entered the game with a 0-2 record was shutting down the Mets allowing two hits and a run in six innings. Saunders, making his first career start against New York felt he had enough to stay in the game but Arizona manager Kirk Gibson stuck with his decision.“It was my decision and it didn’t work out,” he said about pulling his starter. “I accept that.” Saunders was pulled after walking David Wright and after Davis struck out twice. “I’m just a little mad at myself,” he said about the walk to Wright.Added Saunders, “As a pitcher and competitor out there you don’t want to come out of there. And up until the walk to Wright, and eventual home run to Davis, Saunders was able to set down a Mets team that came into the game hitting .212 against left handed pitching.“I knew about their problems hitting,” he said. “When the weather is like this you have to go after the guys and be aggressive.”  It was the first Mets win in the opening game of a series at home this season. Carlos Beltran went 1-for-3 with an RBI single and in his last 13 games is hitting .333 with seven RBI and it was the Mets first victory in which they trailed following the sixth inning.The return of Jason Bay to the lineup has added a spark of optimism who follows Carlos Beltran batting fifth. “We knew one-to six from spring training was going to be pretty good,” said Collins as Bay adds a different dimension to the order.But the key is Pelfrey, and for the first time this season two good back-to-back pitching outings from Mets starters as Chris Capuano got the win the evening before in the series finale with Houston.Notes: Righty Dillon Gee (1-0) gets the start Saturday afternoon in game two of the series…. Angel Pagan was placed on the 15-day disabled list with a strained left oblique and outfielder Jason Pridle was called from Triple- A Buffalo. Pridle got the start in center and went hitless in three at bats…Catcher Ronnie Paulino on a rehab assignment with Buffalo left the game Friday night after five innings with a strained left oblique… Henry Blanco, one of three catchers on the Mets roster last season returned to New York as a member of the Diamondbacks.The 40 year-old, veteran said he was disappointed that the Mets did not renew his contract, however he has adapted to his new surroundings. “They are a great bunch of guys in here,” he said about his new team. “I miss it here, but it is a good situation for me and my family,” and the Diamondbacks welcome his veteran leadership.e-mail Rich Mancuso: Ring786@aol.com