You may like to read my topic Commonwealth Games "Counterpunch For Boxing".

For a PHD or Masters, it is important to consider the topic from all angles.
At some point you need to take a position that you can support.

For actual title bouts - the Griffith vs Paret and Ramos vs Moore bouts of the Sixties are important talking points with significant differences in the causes.
You should consider tragic boxing stories and articles about lost warriors
as points to support various issues.