Sports Justin Fields steps in for Chicago Bears after starting QB Andy Dalton suffers knee injury September 19, 2021September 19, 2021Michael Middlehurst-Schwartz, USA TODAYComments Off on Justin Fields steps in for Chicago Bears after starting QB Andy Dalton suffers knee injury Andy Dalton suffered a knee injury in the second quarter of the Bears' game against the Bengals, opening an opportunity for rookie Justin Fields.