Lions' Stafford says he's confident back injury won't linger

Detroit Lions cornerback Darius Slay (23) takes a defensive position during an NFL game against the Minnesota Vikings, Sunday, Dec. 8, 2019 in Minneapolis. The Vikings defeated the Lions 20-7. (Margaret Bowles via AP)

Green Bay Packers cornerback Kevin King (20) attempts to tackle Detroit Lions wide receiver Kenny Golladay (19) during the first half of an NFL football game, Sunday, Dec. 29, 2019, in Detroit. (AP Photo/Duane Burleson)

Detroit Lions quarterback Matthew Stafford watches from the sidelines during warmups before an NFL football game against the Chicago Bears in Chicago, Sunday, Nov. 10, 2019. (AP Photo/Charles Rex Arbogast)

Detroit Lions owner Martha Firestone Ford talks with Denver Broncos president Joe Ellis prior to an NFL football game, Sunday, Dec. 22, 2019, in Denver. (AP Photo/David Zalubowski)

Detroit Lions head coach Matt Patricia talks with Detroit Lions defensive end Trey Flowers prior to an NFL football game against the Denver Broncos, Sunday, Dec. 22, 2019, in Denver. (AP Photo/David Zalubowski)