Drew Loftis

Drew Loftis

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Fantasy football: J.J. McCarthy’s injury hurts Justin Jefferson’s value

Already, headed into Vikings training camp, the fantasy prospects for the NFL’s best receiver, Justin Jefferson, were aggravated by a hazy quarterback situation.

Now, there is some clarity. Rookie J.J. McCarthy has a meniscus tear in his right knee and will undergo surgery this week. That means we can expect QB Sam Darnold to begin the season as the starter.

There won’t be any firm timetable on McCarthy’s return at least until after the surgery. But best guesses range from missing the first few weeks in the best case, and the entire season in the worst.

Let’s just assume best-case scenario for a moment. That would mean McCarthy could return to action in about four weeks. That would mean missing the first two games before he starts practicing again.

Reminder: He is a rookie. So he is learning a new offense under new coaching with new teammates in a new league. It is not an easy thing to do, and missing a month of prime prep time impedes that transition. So let’s guess it takes at least two more weeks before he is game ready. That makes a reasonable, best case debut in Week 5. Not necessarily the most likely, but the most hopeful.

The Vikings' hazy quarterback situation will affect Justin Jefferson this season, The Post's Drew Loftis predicts.
The Vikings’ hazy quarterback situation will affect Justin Jefferson this season, The Post’s Drew Loftis predicts. Jeffrey Becker-USA TODAY Sports

That game happens to be against the Jets, in London, before a bye. It makes no sense to rush him back, so let’s say he sits that game, then has a bye week, which means his first real game action could come in Week 7 against the Lions.

Reminder: We’re painting this as the best case, by no means a guarantee. He could miss more time. It is safe to assume while he is out, Darnold will be under center.

J.J. McCarthy has a meniscus tear in his right knee and will undergo surgery this week.
J.J. McCarthy has a meniscus tear in his right knee and will undergo surgery this week. Brad Rempel-USA TODAY Sports

Reminder: We mentioned clarity earlier. Imagine your windshield is covered in rain. You can’t see very well. You don’t have clarity. You turn on the wipers, now you can see. But that doesn’t mean the road ahead is going to be smooth just because you can see it. And we fear it could be a bumpy road ahead with Darnold.

Those bumps could cause disruptions in Jefferson’s fantasy output. Now, we believe Jefferson is the most talented receiver in the game at his position. We think he is talented enough to overcome the hurdle that is Darnold and still post strong fantasy numbers. We’re not saying Jefferson is useless.

But we were already concerned about taking him with one of the top seven picks. And now, with the low-percentage probability of McCarthy having a great rookie season dipping even lower with the injury, that is a drag on Jefferson’s fantasy projection.

Fantasy Football DVQ Explainer

Hop out of the pool, unpack your vacation suitcase, boot up your laptop and get ready, because fantasy football season is back.

The Fantasy Madman has returned with the latest iteration of his DVQ.

The Draft Value Quotient is a player rating system that assigns one universal number for every player. This value projects the point in the draft at which a player’s projected production will match the estimated draft pick value.

Since there is a wider separation among production at the top, so too is there a wider gap between DVQ values at the top of the rankings.

The player projections takes into account playing time, expected use/touches, coaching tendencies, part performance and injury history. The DVQ measures these projections against a player’s schedule and factors in positional depth and value above replacement.

These ratings are updated regularly.

Reminder: Darnold has never delivered a blockbuster fantasy receiver season. He has four seasons in which he was the primary starting QB — three with the Jets, one with the Panthers. Here are his top fantasy receivers each season in PPR:

2018: Robbie Anderson (nee Chosen): WR39, 11.2 PPR per game.

2019: Jamison Crowder: WR26, 12.4.

2020: Crowder: WR39, 14.3


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2021: D.J. Moore: WR18, 14.0

For some quick and dirty math, let’s assume Moore is the only benchmark we want to use for Darnold pairing with a top receiver. And let’s assume Jefferson is 20 percent better than Moore.

Moore’s PPR output in 2021 was 237.5 in PPR. And 20 percent bump would put that number at 285, which would have been good for WR8 that season.

That’s not bad, right? The eighth-best wide receiver?

Reminder: This is using the best-case scenario for Darnold, without taking into account any other season or receiver in Darnold’s career history, just using the best season by his best receiver and building on that.

Nevertheless, let’s stick with a WR8 projection. That puts Jefferson more in line with second-round receivers this season — Puka Nacua, Davante Adams, Chris Olave, Michael Pittman Jr., Marvin Harrison Jr., Drake London, etc.

That’s not a bad group, but some of those guys have huge questions. And none of them are routinely picked in the top 5-7, where Jefferson often goes.

So the McCarthy injury has delivered some clarity. And what we see more clearly now is that Jefferson is even less likely to live up to his draft cost with Darnold as his QB.