Here are five quick-hit observations from the Giants’ 31-24 huge win over the Cowboys in Week 13.

1. Can’t blame this one on Romo.
Normally when the Cowboys lose, the attention immediately shifts to how well Tony Romo has played. But considering the man completed 41-of-55 passes for 392 yards and three touchdowns, nobody can pin this loss on Romo. The Cowboys’ defense and running game let them down tonight.

2. Somebody found where Brandon Jacobs was hiding.
For much of this season, Brandon Jacobs has been a ghost. But he emerged today by producing a huge 74-yard touchdown reception in which he actually outran the entire Dallas secondary to the end zone. He only finished with 39 rushing yards on 13 carries, but he did score his fourth rushing touchdown of the year and the key was that he contributed period. Along with Domenik Hixon’s wild 79-yard punt return, Jacobs’ touchdown reception keyed the Giants’ victory.

3. What the hell has gotten into Roy Williams?
After hauling in six passes for 60 yards and two touchdowns on Sunday, Roy Williams has now reached pay dirt five times in the last six games. Granted, he has benefited from more teams paying attention to Miles Austin (who had another big day today, catching 10 passes for 104 yards and a TD), but he nonetheless is starting to produce. Given his lack of explosion and playmaking ability, he’ll never be worth the compensation that Dallas gave up to acquire him, but at least he’s not as useless as he was at the start of the season.

4. Where was the Cowboy running game?
Marion Barber finished with just 36 yards on 15 carries and Felix Jones added six yards on six carries. The entire Dallas rushing game was non-existent today, which is why Romo had to attempt 55 passes. Even though Romo played well and kept the Cowboys in the game, Dallas needs its running game to remain the backbone of the offense or else they won’t get very far if/when they make the playoffs.

5. Boley is starting to produce.
After signing a $25 million free agent deal in the offseason, things got off to a rough start for Michael Boley and the Giants. He tore the labrum in his hip over the summer and then was suspended one game for violating the league’s personal conduct policy. But over the past three games, he has 29 tackles and has knocked down two passes. On Sunday, he made 11 stops and came up with a huge, diving pass breakup on a third down in the second half that would have otherwise set Dallas up in Giants’ field position. Boley is starting to become the player that the Giants envisioned he would be when they signed him in the offseason. He’s the team’s best pass-rushing linebacker and if he can continue to play well, he’ll give the G-Men a boost down the stretch.