Romo was 6-of-9 passing for 67 yards, including two crucial third-down throws, on the winning drive that covered the final 4:45. It came right after New York (4-7) tied the game on a 4-yard touchdown pass from Eli Manning to Louis Murphy Jr. and a 2-point conversion run by Andre Brown, who rushed for 127 yards.
Receiver Dez Bryant, who kept the drive alive with a 19-yard catch on third-and-7 from the Dallas 23, said Romo had one message entering the final huddle.
"We're about to go down there and score this touchdown and win," Bryant recalled Romo saying.
It was about the only mistake Romo made in the closing minutes. However, a field goal was just as good.
"Everyone understood how important the game was for both teams," said Romo, who finished 23-for-38 for 250 yards. "They won four in a row to put themselves back into position. They had a home game. I could tell by their words leading up to it that they were confident. That's what makes the game great. It was a big buildup, but we understood that the game was going to be played on Sunday."
The Giants were left wondering about what they gave away in two losses to Dallas.
"This is tough," said defensive end Mathias Kiwanuka. "This is the NFL and all the teams are pretty evenly matched. Obviously we have our work cut out, but until we are mathematically eliminated, we're not going to pull off the gas at all."
Eleven of the 16 teams in the NFC have better records than the Giants, so their chances of making the postseason are dim.
R Tony Romo goes 6-for-9 and converts two critical third downs on the Cowboys' game-winning field-goal drive.
• Dallas moves into a first-place tie in the NFC East.