EDEN PRAIRIE, Minn. (AP) — The Minnesota Vikings have signed center John Sullivan to a contract extension, giving him a raise and adding one year to his deal to cover the 2017 season.

The team announced the contract Tuesday with the 29-year-old, who's fourth among centers in Vikings history with 93 starts. Sullivan has not missed a game since the 2011 season and has sat out only three times in his seven-year career. Sullivan's base salary will increase this season from $4.65 million to $5.9 million.

Sullivan said in a statement distributed by the team that "one of the most exciting aspects of signing this extension is the trajectory of the organization," citing the roster, coach Mike Zimmer, the fans and the stadium scheduled to open in 2016.

Former Vikings receiver Greg Jennings visits Dolphins

DAVIE, Fla. (AP) —    Free agent receiver Greg Jennings is visiting the Miami Dolphins, who are eager to shore up their corps of wideouts after several departures this offseason.

The Minnesota Vikings released Jennings last month after acquiring receiver Mike Wallace from Miami in a trade. Jennings would have counted $11 million against the Vikings' salary cap this year.

Jennings led the Vikings last season with 59 receptions for 742 yards and six touchdowns. He had three consecutive 1,000-yard seasons with Green Bay.

The Dolphins remain in the market for help even after acquiring receiver Kenny Stills in a trade with New Orleans. Along with the trade of Wallace, they released Brian Hartline and Brandon Gibson.

Jennings visited Tuesday. Miami earlier brought in free agent receiver Michael Crabtree for a visit.