Week 10 in the Pac-12 promised to be a good one, and it delivered.

Although not as much as the stunning — and much anticipated — news out of Los Angeles that Lincoln Riley has (finally) relieved defensive coordinator Alex Grinch of his duties.

That of course leads my 10 overreactions after Week 10 in the Pac-12 …

10. Lincoln Riley’s late move gives Trojans a chance

The door is almost shut on USC, as Saturday’s 52-42 loss to Washington was its 2nd in conference play.

But the Trojans weren’t fighting with the Huskies for their spot in the Pac-12 title game. They were fighting with the likes of Oregon, which they play on Saturday at always tough Autzen Stadium, and Utah and Oregon State.

The Utes play at Washington on Saturday and suddenly smoking Arizona in Week 12. The Beavers host the Huskies next Saturday, then travel to Oregon in the regular-season finale.

I get the feeling Lincoln Riley looked at the league’s composite schedule and realized the Trojans still have a chance, no matter how faint.

Beat Oregon in Autzen, and all of sudden, things are wide open.

The time to can Alex Grinch was after last year. But late is better than never.

9. Is Noah Fifita a top-4 QB?

When 3 Pac-12 quarterbacks have been ranked in the top 3 of the Heisman Trophy watch list at various points in the season, no, it is not going to be easy to crack that nut.

But in the battle for No. 4 with the likes of Oregon State’s DJ Uiagalelei, Colorado’s Shedeur Sanders and Washington State’s Cam Ward — and even his very own Arizona teammate Jayden de Laura — is there any doubt that Fifita has climbed to the top of that list?

His last 2 near-copycat performances — passing for 275 yards against Oregon State then following up with 300 against UCLA on Saturday, with both games including 25-of-32 passing, 3 touchdowns and 1 interception — have been truly fantastic.

This is not like carving up the USC defense, or Arizona State’s. The Bruins and Beavers are actually ferocious, and Fifita made them look like kittens.

If Arizona continues on its trajectory, this is a 10-win team. And, somehow, at 6-3, maybe even this year.

8. USC’s biggest issue is its poor gambling

Last season, the USC defense was everybody’s biggest nightmare at the blackjack table.

The Trojans would hit on 17 against a 5 and win. They’d split face cards against a 9 and draw two more queens. They’d double on 13 and hit an 8.

It as inexplicable, really, how often USC found itself out of position last year, only to be bailed out by the other team. The Trojans had 19 interceptions to lead the conference and finished second to Utah with 49 sacks. They freewheeled, yes, but they guessed right often.

This year? The Trojans are card dead. They double down on 11 versus a 6 and draw a 2. USC’s sacks? Just 2 in the last 4 weeks. The picks? Dried up, just 7 on the year.

Gambling is great when the luck is in your side. Not when Alex Grinch is.

7. Michael Penix Jr. has 3 weeks to wrap up the Heisman

It’s been somewhat of a rocky road for Penix ever since he took over presumptive Heisman Trophy winner status. Saturday’s 52-42 win over USC marked his first game in more than a calendar month with a completion percentage above 70, after starting the season with 4 such games.

But with ranked opponents the next two weeks in Utah and Oregon State, Penix has a chance to pad his stats and bolster his resume to edge past a crowded but overall beatable field.

There is no sure thing in the bunch, it turns out. Williams and LSU’s Jayden Daniels were just tagged for their 3rd losses, there is no way Heisman voters reward Michigan’s JJ McCarthy with the trophy and Florida State’s Jordan Travis doesn’t have near the stats of Penix.

It increasingly feels like a 2-man race, along with another Pac-12 passer.

6. But Bo Nix has 4

Washington makes it out of the regular season undefeated that should be enough of a feather in Penix’s cap. In fact, I’m not even sure a dominant performance in the Pac-12 title game, presumably against Oregon, is needed.

But if those Ducks finish the regular season with 1 loss by 3 at Washington, then defeat the Huskies in the conference title game, that trophy is going to Bo Nix.

5. Utes pulled and Undertaker and proved they’re still alive

By gah, is that the Undertaker’s music?!

Yes, yes it is. And the Harley-riding Kyle Whittingham fits right in as the American Badass.

Left for dead after a truly brutal 35-6 home loss to Oregon last week, the Utes kicked it into fifth gear on Saturday in a 55-3 win over an ascendant Arizona State squad.

Can Utah keep up the momentum next Saturday at Husky Stadium against 5th-ranked Washington? I’m not going to bet against Whittingham.

4. Say goodbye to Justin Wilcox

Cal has been bad across the board this season, that much is not up for debate. The Bears rank in the bottom 3 in the Pac-12 in no fewer than 2 dozen team statistical categories, with a particularly inept special teams.

That is indicative of a bigger issue to me. If you’re going to be mediocre on offense and bad on defense, you need to focus on excelling in the other 3rd.

Cal is bad at everything, and it’s going to cost Justin Wilcox his job. The Bears need a fresh start heading to the ACC, anyway.

3. Is Jake Dickert really that distracted?

The rumors of Jake Dickert to Michigan State have been going strong for more than a month, but does that explain Washington State’s epic collapse?

That 4-0 start is well in the rear-view mirror after a 5th straight loss. This one to lowly Stanford.

There is no excuse for that, least of which a coach with wandering eyes.

The Cougars have already gone through so much as a team, I figured they’d be resilient to things like outside noise. But their ineptitude is deafening at this point.

After all, Jonathan Smith’s name is being bandied about, as well. And you don’t see Oregon State collapsing.

2. Beavers need DJU to hit another level

One of the country’s most important transfer portal gets, Oregon State’s DJ Uiagalelei has been a big addition for the Beavers this year. Just not quite big enough.

Saturday’s 26-19 win over Colorado was an example of his good-not-great play. Completing 50% of his passes against a defense as porous as Colorado’s? That ain’t going to cut it. Yes, he ranks 5th in the Pac-12 in passer rating (154.16), but that mark is far behind the league’s big 3, and even trailing Fifita.

Oregon State still has a puncher’s chance at the Pac-12 title game, but it’s going to need its big free agent to deliver.

1. UCLA has hit its ceiling under Chip Kelly

UCLA’s trip to Tucson on Saturday was what you call an opportunity game, as the Bruins had a chance not just to stem Arizona’s tide, and not just a chance to continue their ascent up the top 25 poll, but a chance to inch ever closer to that mythical 10-win mark.

It’s almost shocking for a program with the national clout of a UCLA, but the Bruins have just 9 seasons of double-digit wins in program history. None since 2014 under Jim Mora. The Bruins got close last year, winning 9 games behind the strength of Dorian Thompson-Robinson and Zach Charbonnet.

And they appear destined for another 9-win year this year. What a disappointment that would be. If this is Chip Kelly’s ceiling, what does that say about the limited resources and potential in Westwood?

The sky was the limit for Kelly in Eugene. The sky is 9 wins in Westwood.