PITTSBURGH — Albert Pujols is so good and home runs come so naturally to him, he isn't even aware of the history he's making.

Pujols tied a major-league record by homering in his fourth consecutive at-bat to account for the St. Louis Cardinals' only runs in a 2-1 win over the Pittsburgh Pirates on Monday night.

"I don't look at numbers," Pujols said. "I don't know. I didn't know anything about it until you guys (reporters) just brought it up. That's not me. I get locked in on seeing the ball and helping my team win and hopefully do some damage out there. And that's what I did today."

A day after hitting three homers, including a game-winner, Pujols homered to center off Pirates starter Paul Maholm (0-2) in the top of the first to give the Cardinals a 2-0 lead.

Pujols doubled in his next at-bat in the third and walked his next time up before flying out to left in the seventh.

"Nothing really surprises me about him anymore," said Cardinals starter Jason Marquis, who pitched eight innings of three-hit ball to win his third consecutive start. "Everyone knows he's the best hitter in the game and he has the ability to do some great things. It's fun to watch him on a daily basis, and I'm glad I don't have to throw to him."

It was the 35th time in Major League history that a player has homered in four straight at-bats. Carlos Delgado, then with the Toronto Blue Jays, last did it Sept. 25, 2003. The previous time it was accomplished in the National League was by the Atlanta Braves' Andruw Jones from Sept. 7-10, 2002.

Pujols joins Stan Musial (July 7-8, 1962) as the lone Cardinals player to homer in four straight at-bats.

Pujols and the Detroit Tigers' Chris Shelton lead the majors with nine home runs and are just the fourth and fifth players to homer at least nine times in their team's first 13 games. Mike Schmidt had 11 home runs during the first 13 games of 1976; Larry Walker (1997) and Luis Gonzalez (2001) also had nine homers in their first 13 games.

Jason Isringhausen allowed a lead-off double to Jack Wilson in the ninth before retiring the middle of the Pittsburgh lineup — Jason Bay, Jeromy Burnitz and Craig Wilson — for his fourth save.

The Cardinals have won three straight.

"They got a home run in the first inning from a very special player," Pirates manager Jim Tracy said. "But beyond that, we matched them pitch for pitch and play for play."

Marquis (3-0) had allowed only one hit and two baserunners — with neither of them reaching second base — through seven innings before the Pirates scored their only run in the eighth on pinch-hitter Nate McLouth's RBI single.

"The guy was dominant today," Pirates shortstop Jack Wilson said. "You're going to run into some pitchers that just have great stuff that day."

Pittsburgh's only other hit Chris Duffy's infield single.

Maholm entered the game with a 7.71 ERA but had his best start of the young season, permitting only two runs on seven hits in six innings.