Pittsburgh Steelers head coach Mike Tomlin's hope that common sense would prevail in the case of Troy Polamalu using a cell phone on the sidelines did not happen. An NFL spokesman confirmed that Polamalu has been fined for using a cell phone on the sidelines.

In last week's game, the Steelers safety exited the game with concussion-like symptoms and headed to the sidelines where he borrowed a cell phone to call his wife to inform he was OK.

League rules prohibit the use of cell phones, a league spokesman said.

"Possession of cell phones, PDAs or other electronic equipment in the bench area during a game is strictly prohibited by league policy beginning 90 minutes before kickoff through the end of the game."

Tomlin said this week that he hopes "common sense would prevail" on Polamalu possibly being fined. 

Polamalu passed a concussion test and could play on Sunday. Check out SB Nation's Behind The Steel Curtain for more on the Steelers this weekend.