But banning players who have paid for their violent crimes is both double jeopardy and an economic waste.
In 1934, the National Football League entered into a gentlemen's agreement to ban black players.
The founders of the league made a decision - in effect, a gentleman's agreement - to ban African-American players.
The program allows the league to ban players who fail to come forward on their own with drug problems or those who are repeat offenders.
The National Basketball Association is attempting to become the first professional sports league to ban players under age 20.
In 1933, Marshall and the owners agreed to ban black players from the league.
Certainly, it can't be the differential pharmacology of various drugs that leads to banning players who use some drugs, but not others.
Obvious sanctions would include banning players who writhe around in agony when cameras prove there was no contact.
The league is within its bounds to ban players for that.
The intruders used their new-found tools to ban players and other site volunteers.