The Dolphins have officially signed cornerback Byron Jones to a five-year, $82.5 million deal, according to ESPN's Adam Schefter.
The deal was first reported on Monday by the NFL Network's Ian Rapoport, and became official on Sunday.
Schefter reports that Jones will earn $40 million guaranteed in first two years and at least $54 million over the first three years, making it the largest guaranteed contract ever for a defensive back.
Jones was drafted by the Cowboys with the No. 27 pick in the 2015 NFL draft. The UConn product has started 73 games in the last five years with Dallas, and Jones was named a Pro Bowler in 2018. He has 349 career tackles along with three forced fumbles and two interceptions.
The Dolphins finished last in the AFC East at 5–11 in 2019. They have not won a playoff game since 2000.