Week 4 marked the turning point of the 2012 NFL season for a handful of teams—a bad turning point.
While some teams showed that they have what it takes to compete down the stretch, others showed that they are going to be irrelevant before that grind comes.
This Sunday's set of games wasn't as close as last week's, which is a sign that parity across the league is dissipating.
Here are three teams that left their fans wanting more after Week 4.
New York Jets: 34-0 Loss to San Francisco 49ers
The New York Jets were one of the teams that showed it will be a disappointment this season in an especially brutal 34-0 loss to the San Francisco 49ers.
Not only did the offense look terribly anemic, mustering a paltry 145 yards of total offense, but the vaunted defense let up nearly 400 yards of total offense and look completely overmatched by the 49ers' running game.
Mark Sanchez turned in yet another stinker, which brought about chants of Tebow from the MetLife Stadium crowd. The ground-and-pound offense looked anything but dominant, and New York's No. 1 wideout Santonio Holmes left the game with a foot injury.
Tebow certainly isn't the answer under center. It appears that there isn't much of an answer for Rex Ryan to find, and it's only a matter of time until the Jets fade into obscurity.
Buffalo Bills: 52-38 Loss to New England Patriots
After putting together back-to-back wins against the Kansas City Chiefs and the Cleveland Browns, Ryan Fitzpatrick and the Buffalo Bills looked to have their season back on track.
That is, until the New England Patriots came to Orchard Park and put a whooping on Chan Gailey's team.
Fitzpatrick and Co. were leading the Pats until the third quarter when Tom Brady ran in for a touchdown with 3:53 left to tie the game. They were then outscored 31-7 the rest of the way.
The Harvard grad hadn't thrown a pick in his last two games, but increased his season total from three to seven against the Pats.
Things might not get much better for the Bills in the near future, as their next two games come on the road against the San Francisco 49ers and the Arizona Cardinals.
Oakland Raiders: 37-6 Loss to the Denver Broncos
Carson Palmer and the Oakland Raiders lost their first two games of the season, but followed that up with a dramatic last-second win over the Pittsburgh Steelers. This week, the Silver and Black got blown out of the water by the Denver Broncos.
It was a road game in a hostile environment and Peyton Manning completed 30-of-38 passes for 338 yards and three touchdowns, but there is no excuse for being out-possessed 37:25 to 22:35.
Which of these teams is in the biggest trouble?
Darren McFadden had just 13 carries for 31 yards, and Oakland showed no reliance on the run game. When you have one of the best running backs in the league, and you don't run him, you're probably going to lose.
The defense got relentlessly shredded, but that'll happen when the opposing offense is on the field for about two-thirds of the game.
Somehow, the Raiders managed to commit zero turnovers in a game in which they allowed 37 points, but that's about all they can take away from this matchup.