Is it illegal to use a player designated by the game as a Free Safety in the Strong Safety position. On my Cardinals1 team I drafted 2 players who are designated in Sandbox as "FS". They are listed in PFF as "S". When attempting to place either of them in the "SS" position in my lineup, neither is available, however, both can be used in the "FS" position.

I was willing to take any deficit for using a FS in the SS position, but I cannot select any secondary players for SS. My only other choices are Linebackers or Street Free Agents.

Thank you,

Chilly