Players › Sakio Chiba

Sakio Chiba

Player No.	237
Rank	7-dan
Date of birth	Feb 11, 1979
Birthplace	Tokyo
Teacher	Shigeru Sekine 9-dan (deceased)

Junisen terms26

Career record146W-109L

Win rate0.573

Deviation score (FY2026)53.8

Best deviation score56.9
FY2015

Rating history and all games →

Junisen record

Term	Class	Rank	Record	Up/down	Deviation
85th term	Class C2	33	4W-1L		53.8
84th term	Class C2	5	4W-6L		41.3
83rd term	Class C1	21	2W-8L	Relegated	42.1
82nd term	Class C1	30	5W-5L		39.1
81st term	Class C1	16	2W-8L	Demerit	51.2
80th term	Class C1	4	5W-5L		49.4
79th term	Class C1	7	7W-3L		50.1
78th term	Class C1	15	7W-3L		56.8
77th term	Class C1	9	5W-5L		54.6
76th term	Class C1	8	7W-3L		54.9
75th term	Class C1	15	6W-4L		56.3
74th term	Class C1	3	5W-5L		56.9
73rd term	Class C1	9	8W-2L		54.1
72nd term	Class C1	3	6W-4L		49.8
71st term	Class C1	6	8W-2L		51.8
70th term	Class C1	15	7W-3L		51.4
69th term	Class C1	18	5W-5L		48.2
68th term	Class C1	5	4W-6L		49.7
67th term	Class C1	11	7W-3L		48.8
66th term	Class C1	9	5W-5L		51.5
65th term	Class C1	8	6W-4L		49.0
64th term	Class C1	28	7W-3L	Demerit cleared	53.8
63rd term	Class C1	27	3W-7L	Demerit	46.1
62nd term	Class C2	12	9W-1L	Promoted	50.2
61st term	Class C2	14	6W-4L		47.3
60th term	Class C2	39	6W-4L		48.6

How the deviation score is calculated: see here.

Terms in each class

Class C1	21 terms
Class C2	5 terms

Promotion history

Feb 6, 2018	7-dan
Sep 16, 2010	6-dan
Apr 1, 2004	5-dan
Oct 1, 2000	4-dan
1995	1-dan

Career win milestones

100 wins	Jan 16, 2007 Junisen
200 wins	Jul 10, 2012 Junisen
300 wins	Mar 9, 2017 Osho-sen
400 wins	Aug 2, 2022 Asahi Cup

Best wins (highest-rated opponents)

Aug 27, 2021	Akira Watanabe 1989	Oi-sen
Mar 8, 2005	Akira Watanabe 1914	Junisen
Apr 27, 2007	Tadahisa Maruyama 1900	Oi-sen
Oct 4, 2017	Takuya Nagase 1899	Oi-sen
Nov 30, 2010	Akihito Hirose 1873	Oza-sen

Career wins and ratings are counted from the games recorded on this site (official games from FY1964, and Junisen games before that) and may differ from official records.

Frequent opponents

Hideyuki Takano	9W-8L	Head-to-head
Hiroshi Okazaki	7W-5L	Head-to-head
Makoto Chuza	10W-2L	Head-to-head
Atsushi Miyata	5W-7L	Head-to-head
Ichiro Hiura	9W-2L	Head-to-head
Daisuke Katagami	8W-3L	Head-to-head
Keiichi Sanada	5W-5L	Head-to-head
Yoshiyuki Kubota	6W-4L	Head-to-head
Masakazu Kondoh	8W-2L	Head-to-head
Makoto Sasaki	5W-5L	Head-to-head
Akira Nishio	4W-6L	Head-to-head
Issei Takazaki	4W-6L	Head-to-head

Head-to-head with other players →