Ragnow, 24, is entering his fourth season in the NFL after being drafted in the Arkansas first round in 2018. He started all 45 games he’s been in and earned his first place in the Pro Bowl last season.
He was on contract for two more seasons after the Lions exercised their fifth-year option on his contract last week.
After the NFL Draft last weekend, Lions general manager Brad Holmes called reaching a long-term deal with Ragnow “extremely important.”
“He’s a fundamental play because Frank is a guy who plays the game the right way,” Holmes said. “He’s everything we look for and what we want as a Leo. “
The Lions front office sees Ragnow as an important piece in the long run as the team seeks to change their culture. The deal aligns with the Lions’ latest draft picks and offseason decisions as they try to build for the future, including drafting Oregon offensive tackle Penei Sewell and adding players veterans to surround new quarterback Jared Goff, like tight free agent end Darren Fells, who has spent the past two seasons with the Houston Texans.
Ragnow ranked fourth among qualifying centers in block win rate and seventh in pass block win rate last season, according to ESPN Stats & Information.
He is the second first-round pick in the 2018 draft to sign a long-term overtime, joining Las Vegas Raiders left tackle Kolton Miller.
“I’ll never forget when it was first announced that I had the job – Frank he contacted immediately,” Holmes said. “I told him, I said, ‘Dude, big fan of you. You are playing the game the right way. ‘ “
He is now rewarded.
Eric Woodyard of ESPN and The Associated Press contributed to this report.