Cleveland fans will get their first look at Johnny Football under fire.

Top draft pick Johnny Manziel (man-ZEHL') is expected to see action in the Browns' exhibition game against Detroit tonight. His performance could go a long way in determining if Manziel is close to challenging Brian Hoyer for the starting quarterback job. Hoyer will get the start against the Lions, and Manziel isn't expected to get any plays with the starting unit.

New Texans coach Bill O'Brien makes his head coaching debut when Houston visits Arizona. It could also mark the NFL debut of No. 1 overall draft pick Jadeveon (juh-DAY'-vee-uhn) Clowney, although O'Brien seemed surprised when the linebacker announced that he would start.

Pittsburgh takes on the Giants and Tennessee hosts Green Bay in the other games.

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