| A | B |
| Collective Bargaining | Gives players the right to organize, use the agent of choice and protect themselves. |
| Leagues | A group of sports teams or individual athletes that compete against each other in a specific sport. |
| Trademark infringement | A violation of the exclusive rights attaching to a trademark without the authorization of a trademark owner, meaning it is also an unfair and anticompetitive trade practice. |
| Free Agency | Allows players to explore options of moving to another team with little or no penalty. |
| Sherman Antitrust Act | A federal legislation that prescribes the law of free competition. |
| Ticket scalping | The act of reselling tickets for admission to events. |
| Federation | It is responsible for one sport or sometimes a group of similar sports disciplines, can be national or international. |
| Commissioner | Elected by the owners of a league's teams. They handle discipline, arbitration of disputes between teams, etc. |
| Strike | When negotiations between a player's union and the owners' organization can not be reached. |
| Exclusivity | Sponsors usually insist on being the only ones in their particular category of goods or services. |
| Salary caps | Limits the amount a team may spend on contracts. |
| Blackout | When a league blocks the broadcast of a certain game in a certain territory. |