Chiyotaikai Ryūji Chiyotaikai Ryūji Chiyotaikai Ryūji (born April 29, 1976 as Ryūji Hiroshima in Chitose, Hokkaidō), is a Japanese former sumo wrestler. He made his professional debut in 1992 and reached the top "makuuchi" division in 1997. He held the second highest rank of "ōzeki" or champion for 65 consecutive tournaments from 1999 until 2009, making him the longest serving "ōzeki" in the modern era. He won three top division "yūshō" or tournament championships, and was a runner-up on seven other occasions. However, he also held the dubious record of being in danger of demotion from "ōzeki" fourteen times. He wrestled for
Computer science in sport took place outside of Europe - in Calgary (Canada) in 2007, Canberra (Australia) in 2009 and Shanghai (China) in 2011. During the symposium in Calgary additionally the president position changed - it has been assigned to Prof. Arnold Baca, who has been re-elected in 2009 and 2011. The following Symposia on Computer Science in Sport took place in Europe again, in Istanbul (Turkey) in 2013 and in Loughborough (UK) in 2015. In 2017 the 11th Symposium of Computer Science in Sport took place in Constance (Germany). During the conference in Istanbul Prof. Martin Lames was elected as president of the