All you need to know about Case Keenum, Patrick Mahomes and lot more

Denver Broncos: Quarterback Case Keenum isn't known for his legs, but he had three carries for 16 yards and a touchdown Sunday in a comeback win over the Oakland Raiders.

However, he paid a bit of a price, missing Wednesday's practice with left knee soreness. "I guess I need to slide a few more times instead trying to go run and bounce around off of defenders," Keenum told reporters Wednesday, adding he wanted to practice but coaches held him out. "But I want to get a first down, I want to score. I'm competitive in that way." Coach Vance Joseph expects Keenum to return to practice Thursday and play on Sunday in Baltimore.

Kansas City Chiefs: As fantastic as Patrick Mahomes' season has started, coach Andy Reid knows that opposing teams will get a better read on the young QB as they get more film to study. "That's the challenge," Reid said Wednesday.

"As they study him, you've got to be able to rise up and do that. Is there going to be a hiccup here or there? Yeah, there's going to be learning experiences going on here.

And everything hasn't been roses to this point -- it looks like it, but that's not been the case." Reid added that Mahomes got great experience in training camp going against defensive coordinator Bob Sutton's complex designs, but he expects other challenges. "Everybody's got their flavor (on defense), and you've got to be able to answer it," Reid said. "If you don't answer it, then you've got problems."

Los Angeles Chargers: Most out-of-conference games inherently feature unfamiliarity between opponents, but Philip Rivers has a pretty good feel for the Los Angeles Rams' defense after playing for Wade Phillips from 2004 to 2006 and facing him twice a year when Phillips was with the Broncos in 2015 and 2016.

"They don't try to trick you with their scheme," Rivers said Monday. "They just line up and say they're better than you, and shoot, that works for them a lot of the time.

So it'll be a heck of a challenge." Rivers is also all-too-familiar with former Broncos cornerback Aqib Talib and former Chiefs corner Marcus Peters, whose four picks of Rivers are his most against any single QB. "I'd put 'em up there with the top corners in the league, both those guys," Rivers said.

Oakland Raiders: Despite Derek Carr's 29-for-32 day against the Broncos on Sunday, wide receiver Jordy Nelson again wasn't heavily involved in the offense, finishing with two catches for 30 yards.

The former Green Bay Packer now has five grabs for 53 yards through two games, but those numbers should increase, according to coach Jon Gruden. "We expect to see more and more from Jordy as the weeks unfold," Gruden said Wednesday. "(Amari) Cooper had a big week last week. (Jared) Cook had a big week in Week 1.

Hopefully, Jordy has one this week." Cooper broke out in Denver with 10 grabs for 116 yards, one game after having just one catch for 9 yards.