Cardinals sign star RB Johnson to extension

The Arizona Cardinals signed star running back David Johnson to a three-year extension through the 2021 season.

Terms of the deal weren’t disclosed Saturday. Johnson will make $1.88 million this season in the final year of the rookie deal he signed in 2015 as a third-round pick out of Northern Iowa.

Coming off a wrist injury that limited him to one game last season, Johnson has rushed for 1,843 yards and 24 touchdowns on 429 attempts in 33 career games. He also has caught 122 passes for 1,403 yards and eight touchdowns, and has 598 yards and a TD on 22 kickoff returns.

Johnson had a record-breaking campaign in 2016, leading the NFL and setting a franchise record with 2,118 scrimmage yards (1,239 rushing and 879 receiving). He also led the NFL and set a franchise record with 20 touchdowns, including a franchise-record 16 rushing touchdowns.

■ Seahawks: The Seattle Seahawks activated safety Earl Thomas to the 53-man roster, making him eligible to play in Sunday’s opener against Denver.

Cornerback Dontae Johnson was placed on injured reserve after hurting his groin during practice this week. Johnson was expected to start at right cornerback, but rookie Tre Flowers, a converted safety, might now do so. Veteran Neiko Thorpe is another option.

The move with Thomas was expected. He made it through his first week of practice with no issues after holding out of training camp while seeking an extension or a trade. His deal expires after the 2018 season.

Seattle added cornerback Akeem King from the practice squad and waived cornerback Simeon Thomas, who was claimed off waivers this week.

Rick Scuteri The Associated Press Cardinals running back David Johnson, trying to get free of Chargers defensive back Rayshawn Jenkins, signed a three-year extension Saturday.