Q: Does UCLA have enough defensive depth to win the Pac-12 given the three major injuries that have taken place to date?

A: Saturday’s game at Arizona will be very telling, but I wouldn’t count UCLA out of the Pac-12 yet. There’s no team in the division — or in the conference, really — that doesn’t have at least one significant question hanging over its head right now. It helps the Bruins that they can avoid Oregon and Washington in conference play.

I do think that the Bruins’ chances hinge a lot on whether or not the rest of league hits some speed bumps too. This feels like a season that will see the Pac-12 produce a two-loss champion, so UCLA’s path could become more about surviving a war of attrition rather than razing the field.

Q: Do you think Myles Jack will stay another year?

A: I do not. This is cherry picking a bit, but other players have left college after missing most of their final season without suffering much in terms of draft position. Sam Bradford (No. 1, 2010) and Todd Gurley (No. 10, 2015) are the first examples that come to mind, and both were coming off injures — shoulder and ACL, respectively — that appear to be more serious than Jack’s. If the UCLA linebacker sticks to that four- to six-month timetable, he should be fully healthy in time for all the major pre-draft workouts. There’s also the matter of that $5 million insurance policy he took out more than a year ago. If he does slip a little bit in this coming draft draft, that should make up for a good chunk of the financial losses. Why would he want to come back to college and risk an even more serious injury?

Q: What are your odds Myles makes it back this year?

A: Not very high, but I don’t think it’s zero. Jim Mora made the right move by ruling him out for the season, as it relieves pressure on Jack to rush a return and jeopardize his football future. But there’s certainly a chance that Jack heals more quickly than expected, and is able and willing to contribute to a late-season push. What if UCLA heads into Utah on Nov. 21 with, say, one loss? Depending on Jack’s recovery, the team might have to have a serious discussion with him about whether or not he’s ready to play. If the Bruins get beat up a bit in the next few weeks, however, then there’s probably no real reason for him to return to the field.

Q: Is Keisean Lucier-South redshirting this year? If not, should we expect to see him now with Myles Jack out?

A: Lucien-South still looks like he needs to put on some more weight, so I wouldn’t expect UCLA to put him on the field unless another linebacker goes down. There’s a lot of depth in that unit, from Jayon Brown to Cameron Judge to Kene Orjioke, but the problem is that no one else is as complete and dynamic a player as Jack. Throwing a true freshman in doesn’t do much to help.

Q: Are we making too much out of the BYU win? The media act as if this is a huge step up from the Utah loss last year, but if Ka’imi Fairbairn had made that field goal last year, the result would have been exactly the same.

A: That’s a fair point. But you could also make that same case about almost any close win; if any one play goes in a different direction the whole outcome could change. It sounds cliche, but I’d argue that it’s more about the cumulative effect of winning such games. Jim Mora said on Sunday that these types of tough wins “builds a deep sense of confidence” for a team, so that when it enters a similar situation, it’s more likely to come out on top. I think that was what helped Stanford in 2012, when it first entered the post-Luck era. The Cardinal hovered between No. 25 and No. 15 in the country for most of the season before eventually winning the Rose Bowl, and won eight games by a touchdown or less.

Does beating BYU in that fashion necessarily mean that UCLA has suddenly fixed its Achilles heel? No, but it’s a step in the right direction.

Q: Why do you think Josh Rosen had such a bad game against BYU?

A: I think Jim Mora hit the nail on the head when he talked about Rosen being a bit overconfident on his throws right after the game.

He really didn’t see anything too unusual from the first two defenses his faced this season, and his early success likely buoyed his idea that he would be able to dominate college ball just as easily as he did high school. BYU disguised its defense a lot better than either Virginia or UNLV did, so that definitely played a part in Rosen making some very poor decisions last Saturday.

Rosen probably won’t play as flawlessly as he did against the Cavaliers now that opposing defenses have more of a blueprint on how to fluster him, but I doubt he’ll do anything as awful as he did against the Cougars either.

Q: What’s the update with Simon Goines? Is he practicing? Will he play this year?

A: The former starting offensive tackle has not dressed at all for practice, though he’s showed up occasionally in street clothes as an observer. I don’t expect him to play this season — particularly given how good the offensive line has looked — and I wouldn’t be shocked if his medical condition eventually forces him to quit football entirely.

Q: With the issues/media attention surrounding Chris Clark’s exit, and Noel Mazzone’s offensive scheme seemingly not having a big place for a pass-catching TE, do you think this will be a difficult position for UCLA to fill from a recruiting standpoint in the future?

A: Maybe. But this also isn’t a scheme that necessarily needs a true tight end, and it’s certainly still attractive enough for hybrid Y-receiver types like Thomas Duarte. What the Bruins really need more than a big tight end is someone with top-end speed and quickness to stretch the field. The bigger knock on recruiting is probably UCLA’s egalitarian use of receivers, keeping any one guy from putting up big numbers. That said, I think the fact that Josh Rosen will be around for another two years will help mitigate that.

Q: When are we getting John Krahn?

A: Haven’t confirmed if adidas has the technology to suit up a guy that big without compromising its “Primeknit” technology.