Ike Davis was just trying to get into scoring position. A few sweet seconds later, it was over.

Davis homered in the 11th inning, Mike Pelfrey turned in another terrific outing and the New York Mets beat the San Diego Padres, 2-1, last night for their ninth straight home win.

Davis started the 11th with a long drive into the second deck in rightfield off Edward Mujica (2-1). The rookie first baseman was mobbed by his teammates at home plate after New York's latest dramatic win at Citi Field.

"I was trying to hit a ball in the gaps somewhere and get to second base, then maybe have someone bunt me over," Davis said. "But he hung the splitter. I saw it pretty early and put a good swing on it."

San Diego threatened in the top half of the inning but Elmer Dessens (1-1) fanned Scott Hairston with a runner on second for the final out, helping New York pick up its major league-best 23rd home win.

"We've played extremely well here," manager Jerry Manuel said. "We're confident here."

Pelfrey allowed one run and five hits while becoming the first Mets pitcher to last nine innings this season. The 6-7 righthander, who struck out six and walked none, is 4-0 with a 1.19 ERA in his last five starts.

Jose Reyes homered and David Wright had two hits for New York, which has won four straight overall. It was the first win for Dessens since Aug. 26, 2007, for Colorado against Washington.

Chase Headley had two hits for San Diego, which won two of three against New York last week at Petco Park. Headley is batting .381 (16 for 42) in his last 10 games.

"We really don't know how to react. We're so confident and used to getting ahead in these types of situations," said Clayton Richard, who threw seven solid innings for the Padres. "It just didn't happen for us tonight."

Davis' seventh homer was the decisive blow in a tight game that featured impressive pitching performances by Pelfrey and Richard.

Richard was in line for the win before Reyes hit a two-out drive to left in the seventh that bounced above the orange line that runs along the top of the wall. Reyes' shot was originally ruled in play by third base umpire Mike DiMuro but was changed to a home run after a video review.

"It was good to tie the game for Pelfrey," Reyes said. "He pitched unbelievable."

In Mets news, Major League Baseball is OK with pitcher Oliver Perez (right knee tendinitis) going on the disabled list after reviewing medical reports.

In other games:

* At Denver, Carlos Lee had three hits, including a tie-breaking RBI single in the eighth inning, and the Houston Astros rallied from a three-run deficit to beat the Colorado Rockies, 4-3.

* At Phoenix, Troy Glaus hit a RBI double in the eighth to break a tie game and Billy Wagner recorded his 10th save as Atlanta edged the Diamondbacks, 7-5.

* At Los Angeles, Manny Ramirez' RBI double in the bottom of the eighth gave the Dodgers just enough to turn back St. Louis, 1-0.

* At Milwaukee, Casey McGehee hit a two-run, two-out single in the ninth, rallying the Brewers to a 3-2 victory over Chicago.

* At Cincinnati, Matt Cain pitched a seven-hitter for his second shutout of the season, extending his recent run of dominance, and singled home a run in the eighth inning, helping San Francisco to a 3-0 win over the Reds.

In Giants news, outfielder Mark DeRosa returned to San Francisco to get his troublesome left wrist examined again.

Noteworthy

* A 3-year-old girl whose skull was fractured by a line drive during batting practice at Dodger Stadium underwent surgery yesterday. In a statement, officials from Children's Hospital Los Angeles said they expect Janelle Briseno will be well enough for release by the end of the week.