Yes.

---

Ninja edit

At the last minute I realized what I had written was probably all wrong. And it was. I shouldn't have been so lazy. For example - the promotion process is explained just a bit lower down on the page.

Criteria for promotion

In modern sumo, the qualifications that an ōzeki must satisfy to be promoted are that he has enough power, skill and dignity/grace (品格 hinkaku) to qualify. There are no absolute criteria, nor is there a set quota: there have been periods with no wrestlers at yokozuna rank, and there have been periods with as many as four simultaneously.

Note to self - at least scroll down a little, dummy!