Teams with the higher Total QBR scores posted a 16-0 record in Week 15.
That's not what made this week perfect for using the ESPN metric to more fully evaluate quarterback play in the NFC West, however. This was a perfect week because three quarterbacks from the division put up impressive-looking numbers in different ways.
2012 Single-game NFC West QBR Highs
Seattle's Russell Wilson scored three first-half rushing touchdowns during a 50-17 victory over Buffalo. San Francisco's Colin Kaepernick tossed four touchdown passes -- a first for a 49ers player since 2003 -- during a 41-34 victory at New England. St. Louis' Sam Bradford struggled while falling behind 30-7, only to pass for 229 yards and two touchdowns in the second half of a 36-22 defeat.
Total QBR measures the ways a quarterback contributes to winning. It discounts stats accumulated when a game has all but been decided. It rewards quarterbacks for rushing touchdowns, not just passing ones. While it penalizes quarterbacks for taking sacks and incurring penalties, it gives them credit to the degree a penalty for pass interference improves the chances for scoring.
So, what would it say about NFC West quarterbacks in Week 15?
The scores seem about right: 99.3 for Wilson, 87.7 for Kaepernick, 58.6 for Bradford and 21.5 for Arizona's Ryan Lindley. Note that the 100-point scale is more percentile-based than linear, meaning it's much tougher to jump from 97 to 99 than from, say, 49 to 51.
Wilson became the first quarterback in the Super Bowl era to finish a game with at least one touchdown pass, three rushing touchdowns and 90 yards rushing. The Pro Football Hall of Fame recognized the performance by acquiring Wilson's game uniform for display in Canton.
Wilson made most of those contributions in the first half, when they were most meaningful. The result was the highest qualifying single-game QBR score in the NFL this season.
Kaepernick posted a very solid 87.7 score for his efforts, which included the game-winning touchdown pass to Michael Crabtree. Recent opponents had limited Kaepernick to shorter passes, but the Patriots failed to do so. Kaepernick's passes traveled 12.3 yards past the line of scrimmage on average, the second-highest figure in the NFL for Week 15. Peyton Manning was at 13.9. The league average was 8.1.
Three of Kaepernick's touchdown passes traveled at least 24 yards past the line of scrimmage before reaching their targets. Receivers gained 2 yards after the catch on those throws. QBR values longer passes over shorter ones. Those touchdowns helped pump up Kaepernick's score more than if the receivers had gained a higher percentage of yards after the catch.
With that, let's take a player-by-player look at NFC West quarterbacks in relation to Total QBR for Week 15:
Russell Wilson, Seattle Seahawks (99.2 QBR, 104.4 NFL rating). Wilson completed 14 of 23 passes (60.9 percent) for 205 yards with one touchdown, zero interceptions, two sacks and 10 passing first downs. He carried nine times for 92 yards and three touchdowns, with five first downs rushing. He had no fumbles. The Bills sacked Wilson on the first play of the game. They had a hard time getting a hand on him most of the day, however. The Bills did not touch Wilson on any of the quarterback's nine rushes. Wilson and running back Marshawn Lynch continued to play off one another effectively on option runs.
Colin Kaepernick, San Francisco 49ers (87.7 QBR, 107.7 NFL rating). Kaepernick completed 14 of 25 passes (56 percent) for 221 yards with four touchdowns, one interception, one sack and 11 first downs passing. He rushed seven times for 28 yards and two first downs. Kaepernick fumbled four times, but the 49ers recovered every one. Bad weather and problems with Patriots nose tackle Vince Wilfork complicated efforts to make clean center-quarterback exchanges. Teammate Frank Gore picked up one of the loose balls and ran into the end zone for a touchdown. Kaepernick's downfield throwing more than offset the one interception he threw while apparently failing to see safety Devin McCourty.
Week 15: Sam Bradford vs. Vikings
Sam Bradford, St. Louis Rams (58.6 QBR, 94.3 NFL rating). Bradford completed 35 of 55 passes for 377 yards with three touchdowns, one interception and four sacks. He ran twice for 9 yards and zero first downs. Bradford did not fumble. He has lost only one fumble all season after losing seven in 2011.
After this game, Bradford said the Vikings surprised the Rams by unleashing frequent blitzes, counter to their tendencies. Minnesota had sent five or more pass-rushers only 19.2 percent of the time through Week 14, the fourth-lowest percentage in the NFL. The percentage was only 22.4 for this game, but the pressure Minnesota brought worked to great effect.
As the chart from ESPN Stats & Information shows, Bradford completed only 4 of 12 passes for 58 yards with one interception when Minnesota brought more than the standard four pass-rushers. He completed 72.1 percent of his passes for 319 yards and three touchdowns the rest of the time.
Ryan Lindley, Arizona Cardinals (21.5 QBR, 45.0 NFL rating). Lindley completed 14 of 21 passes (66.7 percent) for 104 yards with zero touchdowns, one interception, one sack and four first downs passing. He carried twice for 8 yards and no first downs. Lindley has three games this season with a QBR score of 10 or lower. That is tied with Philip Rivers for second-most in the NFL behind Mark Sanchez, who has five. The Cardinals did not need much from Lindley in this game because their defense and special teams were dominating. They stuck with shorter passes and it paid off. Lindley did not win the game, but more importantly, he did not lose it, either.
The chart below shows QBR scores for quarterbacks relevant to NFC West games in Week 15. Rankings in the first column reflect all NFL games for the week.