Sumo wrestling tickets October 2015

Hi,
I am planning to go to Yokohama in October this year. Are there sumo wrestling tournaments around that time? How much are tickets?
Or alternatively is there opportunity to attend a Sumo training session?

Thanks for your help!

Unfortunately, the main tournaments are in September (in Tokyo) and November (in Fukuoka).

But there are going to be various 1-day show tournaments during the month of October, some of which are close to Tokyo (especially 10/9 in Atsugi and 10/10 in Saitama). Here is the schedule:
http://www.sumo.or.jp/en/jungyo/schedule

I believe that the following service can help you purchase the tickets also for these 1-day events, although I am not entirely sure:
https://buysumotickets.com/

As for morning practices, please read the following page for basics:
http://www.japan-guide.com/e/e2080.html

Thanks Uji. I'll have a look at the websites you recommended.

For the Atsugi tournament on Oct 9, I have already inquired with sumotickets.com but they are unable to help with buying a ticket. Any other suggestions? Thanks in advance.