From Adrian Peterson to Dalvin Cook, ACL recoveries have come a long way

Six years ago, when Adrian Peterson returned from a torn ACL in just under nine months to start the Vikings' Week 1 game against the Jacksonville Jaguars, his comeback was considered a miracle of modern science.

And what Peterson did that season, after rehabbing with Russ Paine in Houston, still stands out as one of the great feats in the modern NFL: 2,097 yards, 13 rushing and receiving touchdowns and a MVP award as the Vikings went from 3-13 to 10-6 and a playoff berth.

Peterson's comeback also had the effect of demystifying ACL recovery to some degree, and perhaps that's why few have batted an eye at Dalvin Cook's return, just over 11 months removed from his knee injury, to the Vikings' starting lineup. Cook had more time to recover than Peterson, and he was only 22 at the time of his injury.

But whereas the Vikings were cautious with Peterson early in the 2012 season — giving him only 17 carries in Week 1 and 16 in Week 2, in a year where he'd wind up carrying 348 times — they've resisted the idea they'll need to keep Cook on a pitch count.

"There's nothing that he has told us that says he can't carry the load," offensive coordinator John DeFilippo said this week. "If there's something that comes up or he needs a blow or needs to come out of the football game then we'll handle that situation. Luckily, as you know, we have a fine stable of backs on our football team that we're really comfortable with. If that does arise where he needs a break we're confident in all the guys that we're able to put in the football game."

Cook's 22 rushing attempts in Week 1 last year tied him for the third-most during a season opener in team history, and his 127 rushing yards placed him fifth, as he stole the show from Peterson in the Vikings' Monday night victory over the Saints. If the Vikings need to lean on Cook against the 49ers to the same degree, they seem confident they'll be able to do so.

Here are some other Vikings notes and observations heading into the 49ers game:

Thielen can also land himself another $500,000 by making the Pro Bowl again in 2018, and can hit incentives of $300,000 (with 70 catches or 1,050 yards) or $600,000 (with 80 catches or $1,200 yards). Even if he hits all his incentives for this season, he'll still be significantly underpaid according to the current NFL receiver market — and his camp would have even more reason to talk to the Vikings about redoing his deal following 2018.

3. Thielen only caught four passes from Kirk Cousins in the preseason for 26 yards, while Stefon Diggs had seven catches for 86 yards and a touchdown during the preseason. Asked this week if he believes in the impact the preseason can have on chemistry between a quarterback and his receivers, DeFilippo said, "Sure. I think especially when you have a new quarterback and new wideouts. I think that's huge. I think you go to other places where certain quarterbacks have been there 10, 11, 12 years wherever and they've been in the same system or only been in two systems in their career. Well, I don't think it's as important. I think it's always important, but I don't think it's as important. "But it was important for us early on to get Kirk a little bit more [work] early on in OTAs and training camp than maybe he would next year. I'm just throwing something out there, say it's a 12 play period maybe we give eight of the 12 to try to get him caught up and on page with not only the offensive line but all the wideouts and people he's throwing to. I think that we tried to incorporate that as much as we could to make him as comfortable as we could make him."

4. If Cousins gets his first opening-day win as a NFL QB tomorrow, perhaps it will help him adapt his catchphrase to a Vikings-specific audience. Days after he signed with the team, Cousins filed a trademark application for the phrase "You Vike That!" with the U.S. Patent and Trademark Office, playing off the famous 2015 moment when Cousins yelled, "You like that?!" to a reporter as he walked off the field following a Redskins victory. The video went viral, and Cousins donated proceeds from the ensuing marketing effort to International Justice Mission, a faith-based organization that works to combat human trafficking around the globe.

5. Given the fact 49ers cornerback Richard Sherman has mostly stuck to one side of the field in his career — rather than shadowing receivers like Xavier Rhodes has done in recent years — he figures to see a number of different matchups on Sunday, thanks to the Vikings' ability to line up their receivers in different spots. But if Laquon Treadwell lines up at the 'X' receiver spot, as he did during the preseason, and the Vikings give Thielen plenty of work in the slot, it stands to reason Sherman will see quite a bit of Diggs on Sunday.

6. The Vikings started using Everson Griffen on the left side of their defensive line from time to time last season, in part to give Danielle Hunter more blind-side pass rush attempts and in part to add a layer of unpredictability to the defense. Griffen only played 44 snaps on the left side last season, according to Pro Football Focus, but if he winds up there on Sunday, it could be for the purpose of throwing another curveball at 49ers rookie right tackle Mike McGlinchey. " That's one that, of course, you know their personnel and how things match up, but schematically we look at the skill set of our players and try to put them in the most advantages places to be successful," defensive coordinator George Edwards said. "All I can say is that going into a game and looking at each situation, we're trying to get them in those situations."

8. This will be the eighth time in the Vikings' 58 NFL seasons that they've opened against San Francisco. The Vikings are 4-2-1 in Week 1 matchups with the 49ers, having lost 20-3 in their most recent matchup with San Francisco in 2015. That game, which saw the Vikings fall to what would turn out to be a 5-11 49ers team, didn't exactly presage the team's season, where the Vikings went 11-5 and won the NFC North. But the game — a Monday night matchup that kicked off at 9:20 Central time, more than five weeks after the Vikings opened the preseason in the Hall of Fame Game — caused Zimmer to tweak his routine for when he started preparing for the regular-season opener.

"A few years ago, we started prepping earlier than we did this week," Zimmer said. "It didn't turn out well and I thought we didn't play very good. We are trying to stay as close as a normal week as possible. We had one extra day. I talked to some coach and they had been working on some team for two weeks. I'd rather get their attention right now, get them focused on what we are trying to get accomplished, they plays that they have to do and go from there."

Given the fact the Vikings have three healthy tight ends on the roster, it's hard not to see the team's practice-squad pickup of tight end Cole Hikutini as an effort to glean a few details about the 49ers' offense. Teams often pick up players who had recently spent time with their upcoming opponent, and Hikutini, who'd spent four games on San Francisco's active roster last season, joined the Vikings on Monday after recently being waived by the 49ers.

9. As the Vikings honor the 1998 team that went 15-1 and set a NFL record for most points in a season, former offensive tackle Todd Steussie will blow the Gjallarhorn before Sunday's game.

10. ESPN's excellent "NFL Matchup" show returned this weekend, with Matt Bowen joining Greg Cosell and Sal Paolantonio to break down games around the league. During its segment on Vikings-49ers, the show took a look at how the 49ers use 21 personnel (two running backs, one tight end, two wide receivers) to stress an opponent's linebackers and create matchup issues. It's a favorite look for the 49ers, who could use it to keep the Vikings in their base defense and counter the Vikings' ability to be aggressive with Eric Kendricks and Anthony Barr.