Abdul-Quddus started 15 games in his first season with Miami, gobbling up a career-high 78 tackles, to go along with one sack, five passes defended and two interceptions.
The 27-year-old undrafted free agent signed a three-year deal worth $12.75 million this offseason after flashing good ball-tracking skills in two seasons as a regular contributor in Detroit.
It's a brutal blow for IAQ and the Dolphins. The rangy safety was enjoying the best season of his seven-year career.
Miami is already without strong safety Reshad Jones, who went on IR after just six games. When Jones and Abdul-Quddus were on the field together, they offered versatility versus both the run and pass. For a few weeks, the duo looked like it could become the best safety tandem in the NFL.
Injuries wiped it all away.