“Golden Greek” Jim Londos defeats Jim McMillen in championship match at Madison Square Garden

The video introduces two competitors: the American Challenger and Jim Londos, the Greek champion. It briefly mentions the Harding royal championship and focuses on Rose McMillan's repeated use of headlock techniques.

What is the American Challenger doing in the context of the text?

Who is mentioned as the Greek champion?

What type of championship is referenced in the text?

What action is associated with Rose McMillan in the text?

What is the significance of the headlock mentioned in the text?