"He strained something in his leg on the first fumble, but he went back in for about five or six plays," Dungy said of the defensive end, who was hurt during Indianapolis' win over Houston on Sunday.
Gonzalez took a hit to the head. Dungy said Gonzalez, the Colts' first round pick in 2007, seemed all right.
Indianapolis usually gives players with head injuries an extra weeks' rest before clearing them to play.
Hayden had an MRI on his left knee Monday.
"The field was not the greatest," Hayden said. "It had a couple of holes and I stepped in one and my knee kind of buckled."
Hayden said he had not gotten the results back yet. He is best known for returning an interception for a touchdown in the Colts' Super Bowl victory following the 2006 season.
Indianapolis typically does not give injury updates until Wednesday, when it is mandated by league policy.