In most sumo tournaments (basho), there is a somewhat predictable rhythm. While it is not guaranteed that given ranks will fight on a certain number day, there are broad themes that happen, and there is a marked difference between week one and week two.
One of the highlights of week two is the san’yaku ranks focus largely on matches between themselves, with the occasional high performance Maegashira for flavoring or to fill in gaps from same-stable conflicts (such as Kisenosato and Takayasu both being from Tagonoura-beya). So in general week 2 is when we see the top players grind through determining the champion, and the Maegashira drive for their kachi-koshi (more wins than losses). Kachi-koshi means advancement, it’s evil brother make-koshi (more losses than wins) means demotion.
Wrestlers likely to achieve kachi-koshi
Goeido (achieved), Okinoumi, Endo, Kisenosato, Kotoshogiku, Takayasu, Kotoyuki
Wrestlers in peril of facing make-koshi
Kaisei, Shodai, Chiyootori, Tochinoshin, Myogiryu, Daishomaru
I leave out the Yokozuna, as they retain rank, typically no matter what. For the rest of the rikishi, they can go either way during the next 7 days.
Everything in the first week was to nominate a handful of rikishi for the push to the championship, and to leave the others to fight off demotion.
Leader (8-0): Goeido
Chasers (7-1): Harumafuji, Okinoumi, Endo
Hunt Group (6-2): Kisenosato, Kotoshogiku, Takayasu, Kotoyuki