The 35-year-old Wayne, who returned this season after tearing his ACL in 2013, temporarily left Sunday's win over the Bengals with the injury before returning to the game. On Sunday, Wayne said he was not too concerned about the injury, according to The Indianapolis Star.
"I'm good right now," he said. "Just kind of fell on it. I'll go home, have an adult beverage and see how it feels in the morning."
In seven games this season, Wayne has 38 catches for 434 yards and one touchdown. He became just the eighth player in league history to reach 14,000 career receiving yards.
Wayne was not the only Colt to have an MRI on Monday. Running back Trent Richardson had an MRI after leaving the game with a sore hamstring. After the game, Richardson said he will be fine.
"I'll be good," Richardson said after the win. "I tell everyone I am Wolverine and you can't hold Wolverine down."
The third-year running back has 358 rushing yards with two touchdowns and 173 receiving yards for the Colts.
Linebacker Jerrell Freeman had an MRI after suffering a hip pointer in Sunday's game. Pagano said the team is confident Freeman's injury will not be a long-term problem. After missing time earlier this season with a hamstring injury, Freeman has 27 combined tackles and one forced fumble. He has not recorded a sack after notching 5.5 last season.
Led by league-leading passer Andrew Luck, the Colts have the most total yards in the NFL after finishing No. 15 last season. The defense has improved from No. 20 in yards allowed last season to No. 3 this season.
Indianapolis is 5-2 and in first place in the AFC South. The Colts play the Pittsburgh Steelers on the road on Sunday.
- Paul Palladino