The Pittsburgh Steelers were the only team who did not sign off on the 2011 Collective Bargaining Agreement, an arrangement on the relationship between the NFL and NFLPA that was agreed upon to last for a 10-year period, which was berthed through strife, including a lockout through the summer of that season.
That experience is still fresh on the mind of many as we hasten toward 2021, when the current CBA is set to expire, and the tensions between the two sides have already been surfacing for a while now, with both parties taking outward measures that have been seen as signs that there is belief another work stoppage is very much a possibility.