Baltimore Ravens star Lamar Jackson is listed as questionable for Sunday's NFL clash with the Chicago Bears.

Ravens quarterback Jackson is in doubt to face the Bears due to an illness, the franchise announced on Saturday.

Former MVP Jackson returned for full practice on Friday, having missed two days with an illness.

Jackson has only missed two games in his four-year career in the NFL – sitting out the 2019 season finale (rest) and a Week 12 fixture in 2020 (COVID-19).

Baltimore's Jackson rushed nine times for 39 yards in the Week 10 loss to the Miami Dolphins for an average of 4.3 yards, his lowest mark since Week 4 against Denver Broncos. However, his 6.0 yards per carry this season leads the league amongst qualified players, according to Stats Perform.

This season, Jackson has completed 199 of his 309 passes for 2,447 yards and 14 touchdowns with a 93.1 passer rating, while he has rushed for two scores and 639 yards.

The Ravens, who top the AFC North with a 6-3 record, have lost their last two games against the Bears but both encounters have gone to overtime and were decided by a field goal.