MINNEAPOLIS -- Adrian Peterson thinks he's the best running back in the game.
Now he's getting paid like it, too.
Peterson agreed Saturday to a contract extension with the Vikings that includes $36 million in guaranteed money and as much as $100 million over the next seven years if he plays that long with Minnesota. A league source told ESPN NFL Insider Adam Schefter that Peterson will receive $40 million over the first three years of the deal.
Peterson also will get $1 million each time he rushes for at least 1,250 yards, a source familiar with the contract told ESPN's Schefter. Peterson has done that in each of his first four seasons, when the fewest rushing yards he had in any season was 1,298. Under the terms of his contract, Peterson can do this three times for $3 million total. He also has another $1 million in incentives based on the Vikings' regular-season and playoff results over the life of the contract.
The deal came five days after the Vikings locked up linebacker Chad Greenway to a lucrative long-term contract, the latest in a line of millions of dollars doled out to top players by owner Zygi Wilf since he and his family purchased the franchise in 2005.
Peterson has begun the final year of his rookie deal on a $10.72 million salary and was in prime position for a big pay day.
After setting the NFL's single-game rushing record with 296 yards against San Diego in 2007, Peterson has been picked for the Pro Bowl in each of his four seasons. He's already second in Vikings history behind Robert Smith with 5,782 yards rushing for his career, and his 54 touchdowns over the last four years are the most in the league over that span.
"Adrian loves playing for the Minnesota Vikings," his agent, Ben Dogra, told The Associated Press in a phone interview. "Deep inside he wanted to finish his career with the Minnesota Vikings."
Already making major money this season, Peterson was in line for an even bigger salary in 2012 if the Vikings used their franchise tag to keep him from unrestricted free agency. He was content, then, to let the negotiations between Dogra and the Vikings work themselves out -- and not protest any lack of progress.
"He said, 'Look, I'm under contract. I'm just going to play,'" Dogra said. "He never contemplated holding out. He understands the business side of things. He's very smart like that. He only knows one speed in life, and that's all out. That's why they call him, 'All Day.'"
Chris Johnson chose that path, sitting out for more than a month until the Tennessee Titans worked out a deal with their star running back that will pay him up to $56 million over the next six years, including $30 million guaranteed.
DeAngelo Williams of the Carolina Panthers recently got a contract worth as much as $43 million over the next five years with $21 million guaranteed.
But Peterson's new deal, which is essentially a six-year extension through the 2017 season, when he will be 32, easily surpasses those.
Even if Peterson lasts only five more years, not necessarily a given with the wear that running the ball in the NFL puts on a player's body, he'll get $65 million.
"Adrian's performances on the field have given fans so much excitement since he first joined us as a rookie," Wilf said in a statement released by the team. "His talent and determination are remarkable and we are proud to have him be a part of the family for years to come."
The Vikings open the season against the Chargers on Sunday in their first meeting since Peterson's 296-yard game.
On Twitter, he thanked God, his family, the Vikings and their fans for their support.
"Can't wait to get a ring and finish my career in Minn.," Peterson tweeted.
The Vikings signed rookie tight end Allen Reisner to their active roster, elevating him from the practice squad, in time for Sunday's game. That gives them four tight ends. Backup guard Seth Olsen was waived to make room. Both Reisner and Olsen played at Iowa. ... Peterson has four of the top five single-game rushing performances in Vikings history, with 180, 192, 224 and 296 yards. Chuck Foreman rushed for 200 yards in a game in 1978.
Information from The Associated Press contributed to this report.