in 250-300 words answer the following with ref

Professional sport leagues and player unions negotiate collective  bargaining agreements that include the terms and working conditions of  players in their respective leagues. Use this week's resources and your  own resources to select a common labor relations issue that has  confronted the different professional sport leagues (NFL, NBA, MLB, and  NHL). Several common issues include various types of player grievances,  alleged player cheating, league handling of off-field domestic violence,  player strikes, and owner lockouts. You should not feel restricted to  these issues; they are simply suggestions for you to consider.

In your initial post, address the following:

• Identify the issue and explain how it was resolved in at least two of the sport leagues listed above.
• Compare and contrast the role and effectiveness of the player union in addressing the issue.
• Share at least one resource you used to compose your initial post.