The Oakland Raiders had a chance to make a statement to the NFL world when they took on the Green Bay Packers on Sunday. Instead, they verified everything their doubters said, as they were hammered in a 42-24 loss.

The defeat dropped the Raiders to 3-3 on the season, and while they remain very much in the AFC playoff picture, it's questionable as to just how good this team really is.

Yes, Oakland posted impressive victories over the Indianapolis Colts and Chicago Bears in back-to-back weeks leading up to its showdown with the Packers, but doubts still remained.

And this past weekend, we saw why.

So, here are three things we learned about the Raiders in Week 7:

3. Josh Jacobs Is Special

I am actually going to get things started on a positive note.

Josh Jacobs had his second straight monster performance this past Sunday, racking up 124 yards on 21 carries.

Sure, it came against a Green Bay run defense that has struggled throughout much of the year, but given that Jacobs is just a rookie and was viewed as a rather head-scratching first-round pick for the Raiders back in April, this was impressive.

And it's not just the last two weeks (he tallied 123 yards and a couple of touchdowns in Week 6); Jacobs has been really good all season.

The 21-year-old has rushed for 554 yards and four scores while averaging 5.1 yards per carry through his first six games, a truly tremendous start to what looks to be a promising NFL career.

At the very least, Oakland seems to have found its running back.

2. There Is No Receiver Depth

The Raiders were without Tyrell Williams in this one, and it showed. Big time.

Outside of tight end Darren Waller, who continued his terrific season by logging seven catches for 126 yards and two touchdowns against Green Bay, Derek Carr was very limited in his options.

He found undrafted rookie wide out Keelan Doss for three catches, but no other Raiders wide receiver caught more than two passes.

We know this was going to be a problem once Oakland released Antonio Brown before the season started.

The Raiders acquired Zay Jones from the Buffalo Bills a couple of weeks ago, but the youngster still has not played. Hunter Renfrow looks like he has the chance to be a decent slot receiver, but thus far, his impact has been limited.

Basically, other than Williams, Oakland doesn't have a single reliable wide receiver.

1. The Defense Still Stinks

The Raiders tried to improve their defense this offseason, but it hasn't exactly worked out.

To be fair, rookie safety Johnathan Abram was knocked out for the season in Week 1 and free-agent pickup Vontaze Burfict was suspended for the remainder of the year, but as a whole, Oakland's defense has looked awful.

The Raiders rank just 24th in the NFL in yards allowed and 29th in scoring defense, and if they want to have any chance of making the playoffs, that needs to change, as they don't exactly have an elite offense.

Aaron Rodgers shredded Oakland for 429 yards and five touchdowns on Sunday, which was easily his best outing of the season.