Most of this episode is pure opinion, but there are a few news sources for you:

Time Codes:
0:00 BINGO Winners
6:10 News Flash
9:15 Day 10 Tobizaru's bow and Greens Players, Asanoyama, Terunofuji
15:30 Day 11 Terunofuji vs. Myogiryu and sumo gossip
What is a hostess club?
22:30 Day 12 having Endo in the Mix, Endo vs. Kotoeko
Shodai
27:00 Day 13 Takayasu vs. Myogiryu
Terunofuji vs. Ichinojo
vowel sounds
Endo vs. Takakeisho
33:00 Day 14 Wakatakakage vs. Okinoumi
Takayasu vs. Hoshoryu
Terunofuji vs. Endo - the 3 minute version
Endo's expressions
39:00 The Dead Body Rule - What is "unrecoverable?"
40:00 Day 15 Endo vs. Shodai
Terunofuji vs. Takakeisho
Takakeisho's expressions

Sources:

https://www.sanspo.com/sports/news/20210524/sum21052420560011-n1.html
https://www.nikkansports.com/battle/sumo/news/202105240001040.html?cx_testId=66&cx_testVariant=cx_1&cx_artPos=0#cxrecs_s
https://www.nikkansports.com/battle/sumo/news/202105230000643.html
https://www.nikkansports.com/battle/sumo/news/202105220001570.html
https://www.nikkansports.com/battle/sumo/news/202105220001361.html
https://www.nikkansports.com/battle/sumo/news/202105220000529.html

Music

"Advanced Japanese Folk" by Audiotoolz

https://freemusicarchive.org/music/Audiotoolz/Progressive_Folk/02_-_audiotoolz_-_advanced_japanese_folk

Under creative commons license: https://creativecommons.org/licenses/by-nc-nd/3.0/

News Theme by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)

Artist: http://incompetech.com/

Intro/Outtro music by MARiAN - Tokyo Trap.