He clearly was nursing a significant injury and by having to leave the game that came out. Gamblers do not like those kinds of surprises and, as Richard Sherman said after the Seahawks got called out several years ago for not disclosing Sherman repeatedly was not practicing due to a knee injury, the injury list is primarily for gamblers
https://bleacherreport.com/articles/...y-for-gamblers
Steelers also have a past with this after Bell broke down in the first series of the AFC championship game and it came out he had a groin muscle issue for weeks
http://es.pn/2kbgabF
As long as you make it through the game it is hard to get caught