Indianapolis Colts quarterback Anthony Richardson was too sore to do much at Wednesday's practice. So 39-year-old Joe Flacco could make his first start of the season Sunday at Jacksonville.

The veteran Flacco guided the Colts to a 27-24 win to prevail against a strong second half from the Steelers offense. Pittsburgh’s Justin Fields took control of the game in the second half, throwing for one touchdown and rushing for two scores.

The veteran quarterback, who was last season's Comeback Player of the Year, took over for an injured Richardson in the first quarter.