Who says Tony Romo can’t play in December?

Romo had one of the best games of his career as a Dallas Cowboys quarterback, setting a couple of team records in an NFC-East clinching rout of the Indianapolis Colts on Sunday.

The Cowboys are division champs for the first time since 2009. They’ve scored 35 or more points in three straight games in the same regular season for the third time in team history. The other two instances were in 1983.

Romo is 3-0 this month. He entered this season 14-21 in his career in December and January, including playoffs.

Romo at his best

Romo broke Troy Aikman’s team record for career passing yardage and broke his own team mark for highest completion percentage by completing 18 of 20 passes (90 percent).

Tony Romo - Last 3 Games

Romo had a stretch of 16 straight completions, which lasted more than 42 minutes of game time and 2 hours, 6 minutes, 50 seconds of real time.

This game marked the second time in Romo’s career that he opened each of his first three drives with a touchdown pass. The other was in 2011 against the Bills.

He was a perfect 6-of-6 on throws 10 or more yards downfield, with two touchdowns and no interceptions. That was far better than Andrew Luck, who had only one completion in five attempts that far downfield.

The Cowboys offensive line also had a nice game from a pass-protection standpoint.

Romo was under duress on only one of his pass attempts and was pressured (sack or duress) on just three of his 24 dropbacks (12.5 percent). That's the lowest pressure percentage against Romo this season.

Best in the league?

Romo now leads the NFL in completion percentage this season (70.3 percent), as his performance today pushed him ahead of Drew Brees. He also leads the league in touchdown percentage (touchdowns divided by pass attempts) and first-down percentage (first downs divided by pass attempts).

He has 32 touchdowns and eight interceptions, a 4-to-1 ratio that has been bettered only by Aaron Rodgers this season.

Romo moved to the top of the leaderboard in Total QBR.. He's at 82.3, just ahead of Rodgers (81.2) and Peyton Manning (80.8), who plays on Monday night.

Where Romo separates himself is in the fourth quarter when the score is close. He has an 84.4 Total QBR in those situations (due to a completion percentage of nearly 70 percent, six touchdowns and two interceptions). Rodgers' QBR in those situations is 69.5. Manning's is 60.2

How did Murray fare?

DeMarco Murray, playing less than a week after surgery on his broken left hand, had 22 carries for 58 yards, including a 1-yard touchdown run.

Murray is 6-of-6 in scoring on runs from his opponents’ 1 this season.

Murray didn’t do much when trying to run to his left, managing 11 carries for only 22 yards. He had 36 rushing yards on his 11 other carries.