Sailor · 2014–2026

Koji Matsumoto

hayama marina yc Melges 20 J70 MIXED-PLUS Worlds J/70

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Events: 9
Win rate: 0%
Podium rate: 0%
Typically beats: 24%
Best class ranking: #170

Biggest lift: Tsutomu Kaneko
Longest-running crew: Tsutomu Kaneko
Nemesis: Igor Rytov
Signature result: 29th of 69

Partnerships · 17 sailors

Tsutomu Kaneko · Tempus, TEMPUS · J/24, J/70, J70 MIXED-PLUS Worlds, Melges 20 6events 0 wins together · 0 podiums · 0% win rate · 0 of 55 races won Beat 30% of the fleet together(+28 vs. without) · best 4th · Sep 2014 – Aug 2026
Satsuki Ogawa · Tempus, TEMPUS · J/24, J/70, J70 MIXED-PLUS Worlds, Melges 20 6events 0 wins together · 0 podiums · 0% win rate · 0 of 57 races won Beat 25% of the fleet together(+15 vs. without) · best 4th · Sep 2014 – Aug 2026
Takuma Muto · Tempus, TEMPUS · J/24, Melges 20 3events 0 wins together · 0 podiums · 3 events · 0 of 24 races won Beat 22% of the fleet together(+2 vs. without) · best 24th · Sep 2014 – Jul 2019
Ogawa Satsuki · TEMPUS · Melges 20 2events 0 wins together · 0 podiums · 2 events · 0 of 14 races won Beat 13% of the fleet together · best 17th · Aug 2017 – Jul 2018
Hironori Uno · TEMPUS · Melges 20 2events 0 wins together · 0 podiums · 2 events · 0 of 16 races won Beat 0% of the fleet together · best 15th · Jul 2019 – Feb 2020
Airi Koyama · Tempus · J70 MIXED-PLUS Worlds 1events 0 wins together · 0 podiums · 1 events · 0 of 11 races won Beat 14% of the fleet together · best 33rd · Aug 2026 – Aug 2026
Emilia Cortesi · Tempus · J/70 1events 0 wins together · 0 podiums · 1 events · 0 of 11 races won Beat 17% of the fleet together · best 39th · Jun 2025 – Jun 2025
Tomoki Shimizu · TEMPUS · Melges 20 1events 0 wins together · 0 podiums · 1 events · 0 of 6 races won Beat 6% of the fleet together · best 32nd · Jun 2017 – Jun 2017
Aoi Fukashiro · Tempus · J70 MIXED-PLUS Worlds 1events 0 wins together · 0 podiums · 1 events · 0 of 11 races won Beat 14% of the fleet together · best 33rd · Aug 2026 – Aug 2026
Hiromi Shiino · TEMPUS · Melges 20 1events 0 wins together · 0 podiums · 1 events · 0 of 6 races won Beat 6% of the fleet together · best 32nd · Jun 2017 – Jun 2017

Lift shows how much better this sailor finishes with that partner aboard.

Rating history

Event history · 9

Date	Event	Boat	Class	Role	Finish
12 Aug 2026	J70 MIXED-PLUS World Championship 2026	Tempus	J70 MIXED-PLUS Worlds	Skipper	33rd / 38
26 Jun 2025	Mixed Plus World Championship	Tempus	J/70	Skipper	39th / 47
3 Mar 2023	2022/2023 International Melges 20 Miami Winter Series :: Event 4	TEMPUS	Melges 20	Helm	4th / 9
7 Feb 2020	2019/2020 International Melges 20 Miami Winter Series :: Event 2	TEMPUS	Melges 20	Other	15th / 15
12 Jul 2019	2019 Melges 20 World League - Europe - Event 4	TEMPUS	Melges 20	Helm	24th / 24
21 Jul 2018	2018 Melges 20 World League European Division // Event 4	TEMPUS	Melges 20	Helm	34th / 42
17 Aug 2017	2017 Melges 20 National Championship	TEMPUS	Melges 20	Helm	17th / 18
9 Jun 2017	2017 Melges 20 World League European Division // Event 3	TEMPUS	Melges 20	Helm	32nd / 34
23 Sep 2014	2014 J 24 World Championship	Tempus	J/24	Helm	29th / 69

Ratings

Class	Rating	Rank	Impact
All classes Helm	11 provisional	#49622 band 32437–65938	—
Melges 20 Helm	-93 provisional	#170 band 124–192	−10

3 more classes, not yet ranked

J/70 · Helm · 11 races, 1 event · rating -58
J70 MIXED-PLUS Worlds · Helm · 11 races, 1 event · rating -57
J/24 · Helm · 10 races, 1 event · rating 33

Rank among sailors with a substantial record, all time. In brackets, the ranks this rating cannot be told apart from. Impact is the points of fleet beaten that this sailor adds.

Helm and crew

As helm	9 events	0 wins	beats 20%
As crew	0 events	0 wins	beats —

How they race

Closer	+12 pts	last race of an event vs. the rest
Comeback	−2 pts	the race after a bottom-half finish
Consistency	55%	100% = the same result every event
Big fleets	23%	of the fleet beaten

Head to head

Helm	Races	W–L
Igor Rytov	28	0–28
Vladimir Prosikhin	28	2–26
Daniel Thielman	25	3–22
Kristian Lenkmann	22	2–20
Joan Cardona Méndez	22	1–21
Sanne Crum	22	6–16
Robert Wilber	21	2–19
Jan Kuchar	20	2–18
Pavel Grachev	20	0–20
Matteo Marenghi Vaselli	20	2–18
Alexander Mikhaylik	20	5–15
Luigi Giannattasio	20	3–17

Seasons

Year	Events	Beat
2026	1	14%
2025	1	17%
2023	1	63%
2020	1	0%
2019	1	0%
2018	1	20%
2017	2	6%
2014	1	59%

Boats

Tempus · J70 MIXED-PLUS Worlds, J/70, Melges 20, J/24 · 9 events · 2014–2026

Where they race

Miami, FL, USA · 2 events
Riva del Garda, Italy · 2 events
Newport, RI, USA · 2 events
Torbole · 1 events
Sukošan, Croatia · 1 events
Unknown · 1 events

Is this you?

Claim it to merge duplicates and remove results that aren’t yours. Changes apply at the nightly rebuild.

Helm rating across all classes: 11, #49,622. Compiled from public results; not an official ranking.