You can watch the 10th Kanto Mass Boxing Tournament on YouTube.
[10th Kanto Mass Boxing Tournament Part 1]
https://www.youtube.com/watch?v=YUN5ehR-0ZU
[10th Kanto Mass Boxing Tournament 2nd Division Matches 1-14]
https://www.youtube.com/watch?v=rg8YUYAASTw
[10th Kanto Mass Boxing Tournament 2nd division matches 15 to 20]
https://www.youtube.com/watch?v=kSsQoyOx6A4
[10th Kanto Mass Boxing Tournament 2nd Division 23rd match~]