Here’s a look back at some of the numbers that helped define this past weekend’s NFL games won by the 49ers, Seahawks, Patriots and Broncos.

1. It should come as no surprise that the 49ers and Seahawks scored first in their games this past weekend. Seattle and San Francisco tied for the league lead this season by each scoring first in 12 games. The Seahawks were 10-2 in such games, the 49ers were 11-1.

2. The Saints and Chargers were both scoreless at halftime in their contests. In 98 games since 1966, only 15 teams won after being held scoreless in the first two quarters. The last win by a team having zero points at halftime of a playoff game was on January 8, 2011 when the Jets defeated the Colts, 17-16 after being scoreless in the first half. For the Saints, they had never been held scoreless in the first half in 15 previous playoff contests.

3. The Seattle Seahawks had only 102 yards passing in their win over New Orleans. Playoff teams with under 110 yards passing have won 48 and lost 51.

4. New England scored six rushing TDs in their victory over the Colts. It was only the second time in playoff history that a team had six rushing TDs. The other time… January 15, 1994 when the 49ers beat the New York Giants 44-3.

5. Carolina receiver Steve Smith scored his 10th career playoff TD against the 49ers. He is the active leader in career playoff TDs. Hall of Famer Jerry Rice holds the NFL record for most playoff touchdowns with 22.

6. The Panthers were held scoreless in the second half by the 49ers. In NFL playoff history, teams held without a point in the second half are only 11-112 (.089 winning percentage). The Panthers are now 5-35 (.125 winning percentage) when they are held scoreless in the second half of any game.

7. New Orleans placekicker Shayne Graham missed a pair of field goal attempts for the Saints in their loss to Seattle. Since 2000, teams are only 40-51 in the playoffs if their kicker misses one or more field goal attempts. Denver’s Matt Prater missed a field goal in their win over San Diego, while the Nick Novak missed a FG attempt for the losing Chargers.

8. Marshawn Lynch was a major factor for the Seahawks in their win. He had 28 rushing attempts in the game. The Seahawks are now 22-6 when Lynch has at least 20 or more rushing attempts in a game, and they are now 9-0 if he has 25 or more carries. In their history, Seattle is 67-10 in all games if they get one running back 25 or more carries in a game.

9. The Patriots scored a pair of first quarter touchdowns in their win over the Indy. Teams that have scored 14 or more points in the first quarter of a playoff games in the Super Bowl era are 64-15. Playoff teams that score 17 or more points in the first quarter are 16-0 since 1966. The Patriots have a 49-8 record in games where they score 14 or more points in the first quarter; they have now won 25 of their last 27 with 14-plus points in the initial 15 minutes.

10. Andrew Luck became the seventh QB in the Super Bowl era to throw seven or more interceptions in a playoff season (he had three versus the Chiefs and four against the Patriots). Jim Kelly had nine interceptions during the 1991 post-season; Richard Todd had eight in the 1982 playoffs. Other QBs with seven picks in a single post-season: Drew Bledose, 1996; Brett Favre, 2001; Ron Jaworski, 1980; and Peyton Manning, 2006.

11. San Francisco QB Colin Kaepernick had a rushing TD in Sunday’s game. The 49ers are 9-1-1 in games when Kaepernick has a rushing TD. His only loss? Last year’s Super Bowl.

12. Pats receiver Wes Welker had a receiving TD in their win over Indy. Welker’s teams are 38-6 in games where he finds the end zone.

13. San Diego rookie wide receiver Keenan Allen had six catches for 142 yards with two TDs against the Broncos. He became the 13th rookie receiver to have a 100-yard receiving day in the post-season. His 142 yards ties him for the second-most receiving yards by a first-year player in the playoffs. He also became only the second rookie receiver to have two TD catches in a playoff contest. The other was Willie Green for Detroit on January 5, 1992.

14. Seattle’s 23-15 win over New Orleans was the first time that was the game-ending score for an NFL playoff game. It was the ninth time the 23-15 score ended an NFL game.

15. Both San Diego and New Orleans were scoreless after three quarters of play. Playoff teams are 1-47 in games where they haven’t scored through three quarters of play. The only win? December 24, 1978 when the Atlanta Falcons scored 14 points in the fourth quarter to defeat Philadelphia, 14-13.

16. New England’s 43-22 win over Indianapolis was the first time a 43-22 score ended any NFL game in history.

17. Patriots’ QB Tom Brady did not have a passing TD in their win over the Colts. The Pats are 16-13 in games when Brady does not have a TD pass, but the team is 4-0 in playoff games when Brady goes without a TD pass.

18. Forty-Niners receiver Anquan Boldin had over 100 yards receiving in the game versus the Panthers. It was his fourth 100-yard receiving game in the playoffs in the last three years, tying him with 49ers tight end Vernon Davis for most 100-yard receiving games in the playoffs in the past three seasons. Only five players have had three of more games with 100-plus yards receiving in a playoff game in the last three years; three of the five are from the 49ers… Michael Crabtree also has three such games.

19. At least one home team lost on divisional weekend (home team Carolina lost this past weekend to the 49ers). At least one home team has lost on divisional weekend every year since 2005. The last year when all the home teams won on divisional playoff weekend was 2004 when home teams New England, Pittsburgh, Atlanta and Philadelphia all were victorius at home.

20. San Diego QB Philip Rivers was sacked four times in their loss to Denver. The Chargers are now 29-106-4 (.223 winning percentage) when they allow four or more sacks in a game since 1966.

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