Giants waive QB Alex Tanney, promote RB Austin Walter before TNF matchup with PatriotsWith Barkley and Gallman out, the Giants needed a third active RB10/10/2019, 5:26 PMAug 16, 2019; East Rutherford, NJ, USA; New York Giants quarterback Alex Tanney (3) throws a pass against the Chicago Bears during the second half at MetLife Stadium. Mandatory Credit: Noah K. Murray-USA TODAY Sports / Noah K. Murray