Downs is excited to play alongside veteran wide receiver Keenan Allen, whom the Colts signed to a one-year contract Monday, Paul Bretl of USA Today Colts Wire reports.
Warren (groin) is expected to miss about a week, but his status for Week 1 against the Ravens isn't in any danger, Ian Rapoport of ESPN and NFL Network reports.
Warren (groin) suffered a strained abductor in Wednesday's practice but is expected to return to practice next week, NFL reporter Jordan Schultz reports.
Trubisky (biceps) did not participate in Wednesday's practice, Terry McCormick of TitanInsider.com reports.
Giddens (hamstring) participated in Wednesday's practice, Nathan Brown of The Indianapolis Star reports.
Coach Shane Steichen told Kevin Bowen of 107.5 The Fan Indianapolis on Wednesday that Pierce (ankle) is "in a great spot right now. ... Hopefully, we will have him back soon."
Coach Shane Steichen confirmed Warren suffered a groin injury during Wednesday's joint practice with the Falcons but provided no additional information, James Boyd of The Athletic reports.
Warren rejoined his teammates on the sideline without a helmet after suffering an apparent groin injury during Wednesday's practice, Stephen Holder of ESPN.com reports.
Warren suffered an apparent groin injury during Wednesday's practice, Joel A. Erickson of The Indianapolis Star reports.