ARLINGTON, Texas - Now Tony Romo knows what it sounds like to hear more than 100,000 people booing.
For all hype and pageantry leading into the first game at Cowboys Stadium, the largest regular-season crowd in NFL history turned against their star quarterback once he reverted to some of his error-prone ways.
"Obviously my mistakes really put us in a hole and allowed them to capitalize on some things. ... I really cost us," Romo said. "I'm sorry I wasn't able to play up to the level of the rest of the guys."
The New York Giants scored all three of their touchdowns after Romo threw interceptions, then Lawrence Tynes kicked a 37-yard field goal as time expired for a 33-31 victory over the Dallas Cowboys on Sunday night.
A week after a career-best 353 yards passing and no turnovers in the season opener, Romo had one of his worst outings in one of the biggest settings of his career: 13 of 29 passing for 127 yards in the home opener.
"I'm just really, really disappointed in myself right now," Romo said.
So were many in the packed house of 105,121 that included former President George W. Bush, NFL commissioner Roger Goodell and LeBron James.
Even with the mistakes by Romo, it was incredible first game at the nearly $1.2 billion stadium: eight lead changes, neither team ever ahead by more than six points. The lead changed three times in the final 8 minutes, and Tynes had to make the game-winner twice - Dallas called timeout just before the snap the first time he made it.
Cowboys owner Jerry Jones wanted the defending NFC East champions for the first opponent, a showcase game for the opener. And the Giants (2-0) ruined the ending.
"It was a big game, a division game," said Kenny Phillips, who had two of the interceptions. "It was like their homecoming game. They picked us to play here. It's a big win."
Eli Manning was 25 of 38 for 330 yards with 22-yard touchdowns to Mario Manningham and Steve Smith. Each caught 10 passes, with Manningham's covering 150 yards and Smith's going for 134. It was quite a way for the Giants to end a 13-game stretch without a single 100-yard receiver.
After the Cowboys (1-1) went ahead for the final time, 31-30 on a 7-yard touchdown run by Felix Jones with 3:40 left, there was plenty of time left for Manning.
The Giants got out of a first-and-20 at their own 15 and kept it going with two third-down conversions, the second coming on a tipped pass caught by Manningham.
"The whole team did a good job of gutting it out," Manning said. "This is a good thing to build from."
New York relied on Manning's arm because Dallas limited Brandon Jacobs to 58 yards and Ahmad Bradshaw to 37. However the Giants did it, they have won both their games against NFC East foes.
"People were talking about this like it was the Super Bowl in the second week of the season," Giants linebacker Antonio Pierce. "We just came here to win a football game."
Romo's first interception was returned for a TD, the second was a bit of a fluke (it bounced up off Jason Witten's heel) and the third was a punt-like heave.
Between Romo's pickoffs and a fumble by Felix Jones that turned into a field goal, Dallas helped New York score 24 points. The Giants' only other scores were field goals on their first drive and their last two.
"This game wasn't a wasted effort," Patrick Crayton said. "We just can't make turnovers. ... That was the game."
Romo had never thrown for so few yards in a full game, and his passer rating of 29.6 was the second-lowest of his career. It also was a dramatic reversal from the opener and, worse, came against a Giants defense that already was missing two injured starters in the secondary before end Justin Tuck got hurt.
The Cowboys stayed in it thanks to their running game. Marion Barber ran for 124 yards and the stadium's first touchdown, and Jones added 96. Dallas' 251 yards rushing was its most since 1993.
NOTES: The largest crowd had been 103,467 for 49ers-Cardinals in Mexico City in 2005.
... Dallas had spoiled New York's opener at Giants Stadium, winning 24-14 in 1976.
... Four hours before kickoff, fans were streaming into the stadium, especially the 30,000 or so with party passes for the packed decks at either end of the field.
... Roger Staubach, Bob Lilly, Troy Aikman, Emmitt Smith and Michael Irvin were among those taking part in a halftime ceremony to unveil the new Ring of Honor.
... Tynes also made field goals of 30 and 28 yards, but missed a 29-yarder.
... Tuck left the game in the first half with an injured left shoulder when he was tripped, but said he was fine. Giants WR Domenik Hixon left after the first drive with a strained knee. Coach Tom Coughlin didn't know his status.