San’yaku Torikumi Forecast


Since the schedulers only give us the Torikumi one day in advance, it’s fun to speculate about the days ahead. Below is a guess for the bouts for the remaining San’yaku rikishi for days 12-15. Others who know more about scheduling than I do should chime in.

  Day 12 Day 13 Day 14 Day 15
Hakuho Tamawashi Goeido Takayasu Harumafuji
Harumafuji Mitakeumi Takayasu Goeido Hakuho
Goeido Tochiozan Hakuho Harumafuji Takayasu
Takayasu Kagayaki Harumafuji Hakuho Goeido
Tamawashi Hakuho Hokutofuji Ura Kagayaki
Mitakeumi Harumafuji Tochinoshin Ikioi Chiyoshoma
Yoshikaze Tochinoshin Ikio Kagayaki Ura
Kotoshogiku Shodai Ura Tochinoshin Hokutofuji

The Yokozuna schedule should be very straightforward. The only question is the order in which they face the Ozeki, and given the cache of the HakuhoTakayasu bout, I’m guessing they’ll hold it till day 14, even though Goeido is ranked higher than Takayasu on the Banzuke.

This also sets the Ozeki schedule except for day 12. They will already have fought the rest of the San’yaku and the upper maegashira after day 11, and Kagayaki and Tochiozan are next in line. Given his stronger record, I have Takayasu facing the higher-ranked of the two.

The two sekiwake have their remaining Yokozuna bouts on day 12, and then face the upper maegashira they haven’t fought yet. The two komusubi are done with their San’yaku schedule, and will face maegashira from here on out.

Beyond the high-rank bouts with obvious yusho implications, I’m looking forward to Ura facing Kotoshogiku, Tamawashi, and Yoshikaze, as I’m sure is everyone else. Goeido is fighting to avoid kadoban status. All four sekiwake/komusubi slots are mathematically up for grabs (although Mitakeumi needs only one more win), with multiple candidates to move up to the San’yaku should slots open up, so the remaining Tochinoshin and Hokutofuji bouts also have a lot of meaning and should be fun to watch.

It’s looking like a great final act to Nagoya!

The crystal ball was pretty clear for Nagoya


I learned some banzuke projection lessons from Natsu, and stuck closer to my quantitative system, with fewer subjective adjustments. This worked much better, as detailed below. I also think that Nagoya was easier to predict, largely due to many fewer rikishi with 8-7 or 7-8 records.

The San’yaku went exactly to form. The only real question was whether Kotoshogiku would hold on to the second Komusubi slot, and he did. The meat grinder also went almost exactly as predicted, with only Endo and Ura switching positions. Ura had a better computed rank, and I thought Endo would drop further after his 6-9 record, but given his popularity and how well he did against the San’yaku, relatively speaking, this isn’t a huge surprise. Ura might have a slightly easier schedule at M4e than at M3w, which he can use in his first tournament this high up the banzuke, although he’ll still get at least a taste of San’yaku opponents.

The lower maegashira ranks are always harder to predict, but even here, all the projection misses were by one rank, and involved switches of rikishi who had identical computed ranks. It’s hard to see a consistent pattern in NSK’s choices of Takanoiwa above Aoiyama, Okinoumi above Chiyotairyu, Takekaze above Takarafuji, or Kotoyuki above Chiyomaru. In the coin flip M16 slot, Gagamaru got the nod over Kaisei.

Overall, my projection resulted in 28 “bullseyes” (correct rank and side), 3 additional correct ranks on the wrong side, and 11 misses, all of them by one rank. Among the maegashira projections, there were 17 bullseyes, 3 hits, and 11 misses. I’m gaining some confidence that the projections can give us a good early idea of what the official banzuke ends up looking like.

Nagoya Banzuke Live


banzuke-1

Complete Re-Rack of Sumo Stars.

We knew coming out of the tumultuious Natsu basho that everything was going to go strange for Nagoya, and it did indeed happen. We are delighted to report that the July banzuke is now live on the sumo associations website.

Notable highlights include

  • Takayasu’s first appearance as Ozeki
  • Mitakeumi’s first appearance as Sekiwake
  • Takakeisho rockets higher to Maegashira 1
  • Hokutofuji reaches the joi with his posting to Maegashira 2
  • Tochinoshin back in upper Maegashira after nearly washing out to Juryo a few tournaments ago

We are going to have a great July tournament. Tachiai’s wall to wall coverage starts now!

 

Banzuke Sunday


banzuke

Nagoya Ranking Sheet Today

After the long summer break, it’s time to begin the ramp up to the hotly anticipated Nagoya basho. Later today (in about 6 hours from this post), the Japan Sumo Association will post the banzuke online, as well as release thousands of printed copies.

If you want to take a look at Tachiai’s projections via contributor Iksumo:

Upper Makuuchi : Nagoya banzuke crystal ball part 1
Lower Makuuchi : Nagoya banzuke crystal ball part 2

Of course Tachiai will bring you all the details and our insights as soon as the banzuke is published.

Projecting a Champion: Part 1


One of the interesting by-products of my dive into Miyagino-beya’s silver medal squad was uncovering a potential new jewel in Enho. For a stable that produces very little in talent behind possibly one of the greatest rikishi ever to walk the earth (and let’s be honest, Miyagino-oyakata can be forgiven for that), it was curious to see a newcomer blast his way to a 7-0 yusho in the lower levels.

When looking to see whether this was at all something he shared in common with the current crop of sekitori as a possible signal of success, the answer was overwhelmingly yes. Of course, it is not the only signal, and as with many other sports, so much can go wrong (injuries, confidence, new trainer, etc.). But several top level rikishi put up multiple such records in their early (first year) basho and many more did it at least once. So this then begs a new question: out of the hundreds of men trying to break their way into professional sumo, is it possible to use this indicator to pluck names from down the banzuke – and if it is, when do we expect to see them bringing honour to their heya? If they don’t manage it, how much harder is it to then reach the top? This will be the first part in a series to attempt to try and figure all of this out.

First things first, let’s look at the most recent crop of 70 sekitori. We can use the March banzuke as a guide to figure out if there’s a story here because any makuuchi/juryo promotions/demotions aren’t going to massively change the calculus and the turnover from juryo to makushita doesn’t meaningfully affect our sample size (and we’re not only interested in who might make it to Juryo 14W someday).

chart-3

What I’ve done here is split the sekitori into four categories: those who managed multiple 7-0 records in their first 6 full tournaments (post-maezumo), those who managed it one time, those who didn’t manage it, and those who didn’t manage it but were already in Juryo well before their 6th tournament (owing to entering the banzuke at makushita level as an amateur champion). This doesn’t tell the full story but it is somewhat telling that half of the professional ranks managed an early zensho. Of course, you’d expect the wrestlers who have been contending for titles their whole career to float towards the top, and so let’s see if that’s what we’ve got:

chart-4

chart-5

This confirms those suspicions. Makuuchi contains a higher number of rikishi to have put a zensho on the board their first year at least once (Kisenosato registered his first in his 7th basho otherwise this would have been more extreme), and as you’d expect it also contains a larger number of amateur champions who fast tracked their way to the top (and stayed there).

For the next parts in this series, we’ll start to look at how long it took these sekitori on average to reach juryo, and then start to look at the success rates of those who score this record and start to identify commonalities among them (kimarite, stature, etc), to model out who we might expect to charge up the banzuke soon and give us some more lower level candidates to track over the coming year. Again, this is just one of many signals – and there are many other intangible variables (stable, personality/confidence, etc) but it will be interesting to dig in and get an understanding of how impactful it is.

Nagoya banzuke crystal ball part 2


This post is the follow-up to Nagoya banzuke crystal ball part 1.

Lower maegashira

M5 Chiyoshoma Tochiozan
M6 Ichinojo Onosho
M7 Daieisho Aoiyama
M8 Takanoiwa Ishiura
M9 Tokushoryu Chiyotairyu
M10 Okinoumi Shohozan
M11 Daishomaru Chiyonokuni
M12 Arawashi Takarafuji
M13 Takekaze Sokokurai
M14 Sadanoumi (J) Chiyomaru (J)
M15 Nishikigi (J) Kotoyuki
M16 Kaisei/Gagamaru (J)?

Make-koshi at Natsu in red; kachi-koshi in green; (J) = promotion from Juryo.

That looks like a lot of red. So I counted, and 14 of the rikishi in this part of the banzuke had losing records at Natsu. I guess that’s why they’re here. Only 6 of the wrestlers here who were in Makuuchi at Natsu had winning records, most notably Onosho, who jumps all the way from M14 to M6. It’s probably to Onosho’s benefit that he takes a big jump up the banzuke but gets more experience before having to face the highest ranks. Conversely, Chiyonokuni tumbles all the way from M1 to M11 (see “meat grinder, the” in the previous post; everyone but Endo finds themselves here: Chiyoshoma, Tochiozan, Daieisho, Aoiyama, Okinoumi).

I learned my lesson from Natsu banzuke prediction and stuck entirely to the order dictated by my computed ranks. So the only decision was how to break ties. In general, I gave the nod to the rikishi ranked higher at Natsu. But in a few cases, I bumped up wrestlers with kachi-koshi above those with make-koshi: Tokushoryu and Chiyotairyu above Okinoumi and Shohozan, Daishomaru above Chiyonokuni and Arawashi, and Chiyomaru and Nishikigi above Kotoyuki.

Finally, Kaisei/Gagamaru seems like a complete toss-up. Kaisei went 7-8 in Makuuchi. His 7 wins include 2 over Juryo opponents and a fusen “win” over Kotoyuki. Gagamaru went 9-6 in Juryo, including 1-1 against Makuuchi opponents. Their recent performances don’t give any reason to expect anything more than a mediocre performance by either at the bottom of Makuuchi, with a good chance of demotion to Juryo after Nagoya. But someone has to fill M16e…