What does it mean that Mary Wilson has assumed controlling interest in the Buffalo Bills?
In short: Not much.
NFL bylaws mandate every club must have a single controlling owner, sometimes also referred to as the principal owner. When Bills founder Ralph Wilson died last week, a new one had to be appointed.
If anyone other than Mary Wilson had been announced controlling owner, then that would have been newsworthy.
This afternoon's announcement was a formality. It establishes the club's executive structure and begins the process for the team's eventual sale.
A controlling owner is required for voting on league matters, but can assign that role to another executive. When Ralph Wilson couldn't attend the NFL owners meetings in recent years, Bills president and CEO Russ Brandon or CFO Jeffrey Littmann would cast the team's vote.
A team source told me this afternoon that Brandon will retain his voting powers under Mary Wilson just as he did under her late husband.