Pittsburgh Steelers vs. Arizona Cardinals analytic breakdown by the numbers

The Pittsburgh Steelers were able to secure their 4th win of the 2015 season in a most improbable fashion. No Ben Roethlisberger, no Ryan Shazier and even no Mike Vick in the second half. However, Landry Jones and a stingy defense was able to hold the high-flying Arizona Cardinals to just 13 points at Heinz Field. When looking at the data from our friends at ProFootball Focus, there were some bright spots for the Steelers, and some which would be best forgotten.

On the offensive side of the ball, it is no surprise Martavis Bryant was a bright spot on the team, even in retrospect. In fact, Bryant posted the highest grade of his career at +4.1. Of his 137 yards, 94 came after the catch, and his six catches came against five different coverage defenders.

Speaking of coverage defenders, Antonio Brown drew a tough assignment from the Cardinals secondary. Six of Brown's eight targets came against Patrick Peterson in coverage. Peterson allowed just two catches for 26 yards. To Brown's defense, this would be much more notable for Peterson if Ben Roethlisberger were the quarterback throughout the game.

For the offensive line, watching Kelvin Beachum go down with an ACL tear had to be difficult, but with Mike Tomlin it is the "next man up" and Alejandro Villanueva was that man Sunday. Villanueva came in for 44 snaps and while he was poor in the run game (-3.2 run blocking) he allowed just one hit in 22 pass blocking snaps.

When Michael Vick left the game due to a hamstring injury, fans across the vast Steelers Nation held their collective breath. They wondered how Landry Jones would be able to win the game for the Steelers. Well, he did just that and his stats don't lie. Both of Landry Jones' touchdown passes came under pressure, giving him a 156.3 QB rating under duress. Eight of his 12 passes were aimed at least 10 yards downfield.

On the defensive side of the field, Week 6 was like a James Harrison renaissance. Harrison was the most productive pass rusher Sunday, recording a sack and three hurries. At +13.6, he is PFF's fifth highest graded 3-4 OLB on the season.

In the secondary things weren't quite as positive, especially for Antwon Blake. Blake had a poor day in coverage, allowing nine catches on 13 targets for 163 yards and a touchdown. Michael Floyd, Larry Fitzgerald, and John Brown each had at least 40 of their receiving yards against him.

In the absence of Ryan Shazier, it was a combination of Sean Spence and Vince Williams who filled the void, but it was Williams who had one of his best games as a professional with his highest graded game of his career (+3.0). He also had two defensive stops and a pass deflection on only 30 snaps.

Stephon Tuitt is another player who continues to show steady improvement across from Cameron Heyward. Tuitt's +1.3 grade continues to display his improvement. He has posted his fourth grade above +1.0, adding four quarterback hurries to give him a season total of 16 pressures.

The Steelers look to continue this improvement on Sunday when they travel to Arrowhead Stadium to play the Kansas City Chiefs in Week 7.