What happened: John Harbaugh said J.J. McCarthy could still factor into New York's quarterback plans, even with Jameis Winston set to open Sunday against the Arizona Cardinals. McCarthy arrived Sept. 28 in a trade from the Minnesota Vikings after Jaxson Dart's season-ending knee injury. Harbaugh added that the Giants were still sorting out how McCarthy and Jake Haener fit behind Winston as the week unfolded.

Why it matters: The call matters for a 2-1 team trying to steady the position after losing Dart while also absorbing Brian Burns' season-ending ACL injury. Any change would accelerate McCarthy's move from trade pickup to game-day option instead of leaving New York on a week-to-week bridge with Winston.

What to watch: Sunday's inactive list and backup order will show whether McCarthy is limited to emergency duty or has an immediate package against Arizona. The next quarterback decision after this game will signal how quickly Harbaugh is willing to move off Winston if the offense stalls.