Sailor · 2017–2026

Ronald Jonker

club nautique de sciez Handicap Grand Surprise Bateaux jaugés SRS

Search sailors · About these ratings

Events: 42
Win rate: 5%
Podium rate: 12%
Typically beats: 60%
Best class ranking: #21

Most successful partnership: Sylvian Mauron
Best trio: Sylvian Mauron & Catherine Ducret
Biggest lift: Francoise Chauvin
Longest-running crew: Jean Marie Mechelany
Nemesis: Bernard Borter
Rival: Maurice Gay
Best day: 14 Oct 2018
Signature result: 1st of 39

Partnerships · 50 sailors

Most successful partnership: Sylvian Mauron — 1 wins · 2 podiums in 4 events together

Jean Marie Mechelany · Morpho, MORPHO · Bateaux jaugés SRS, Grand Surprise, Handicap, Jaugé SRS 2018 35events 1 wins together · 4 podiums · 3% win rate · 3 of 89 races won Beat 59% of the fleet together(+9 vs. without) · best 1st · Oct 2017 – Aug 2026
Pedro Faustino · Morpho, MORPHO · Bateaux jaugés SRS, Grand Surprise, Handicap, Jaugé SRS 2018 16events 1 wins together · 3 podiums · 6% win rate · 3 of 58 races won Beat 67% of the fleet together(+16 vs. without) · best 1st · Oct 2017 – Aug 2026
Catherine Ducret · Morpho · Bateaux jaugés SRS, Grand Surprise, Handicap 14events 1 wins together · 3 podiums · 7% win rate · 2 of 25 races won Beat 57% of the fleet together(±0 vs. without) · best 1st · Jun 2021 – Aug 2026
Antoine Petit · Morpho, MORPHO · Bateaux jaugés SRS, Grand Surprise, Handicap, Jaugé SRS 2018 13events 0 wins together · 1 podiums · 0% win rate · 1 of 33 races won Beat 66% of the fleet together(+13 vs. without) · best 2nd · Oct 2017 – Aug 2025
Wifried Bader · Morpho · Bateaux jaugés SRS, Grand Surprise, Handicap, SRS 12events 1 wins together · 2 podiums · 8% win rate · 2 of 24 races won Beat 62% of the fleet together(+7 vs. without) · best 1st · Oct 2019 – Sep 2022
Laurent Wantellet · Morpho · Bateaux jaugés SRS, Grand Surprise, Handicap 11events 0 wins together · 0 podiums · 0% win rate · 0 of 23 races won Beat 50% of the fleet together(−10 vs. without) · best 4th · May 2023 – Aug 2026
Domenico Amato · Morpho · Bateaux jaugés SRS, Grand Surprise, Handicap 11events 0 wins together · 1 podiums · 0% win rate · 1 of 37 races won Beat 52% of the fleet together(−7 vs. without) · best 2nd · Jun 2020 – Aug 2026
Anne Manderson · Morpho · Handicap 11events 0 wins together · 0 podiums · 0% win rate · 0 of 30 races won Beat 48% of the fleet together(−12 vs. without) · best 4th · Jun 2020 – Jun 2026
Eric Berling · Morpho · Bateaux jaugés SRS, Handicap 10events 0 wins together · 1 podiums · 0% win rate · 0 of 20 races won Beat 53% of the fleet together(−5 vs. without) · best 2nd · Jun 2020 – Jun 2026
Raphaël Mechelany · Morpho · Bateaux jaugés SRS, Grand Surprise, Handicap 9events 0 wins together · 0 podiums · 0% win rate · 0 of 23 races won Beat 48% of the fleet together(−11 vs. without) · best 4th · May 2019 – May 2025

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

Rating history

Event history · 42

Date	Event	Boat	Class	Role	Finish
12 Sep 2026	La Double North Sails	Phénix	Handicap	Crew	62nd / 80
21 Aug 2026	Belle Etoile 2026	Morpho	Bateaux jaugés SRS	Crew	22nd / 49
22 Jun 2026	Semaine du Soir de Versoix	Morpho	Handicap	Crew	4th / 5
2 May 2026	Criterium Surprise, Toucan et Grand Surprise	Morpho	Grand Surprise	Crew	6th / 9
30 Aug 2025	Le Joran	Morpho	Handicap	Crew	4th / 6
22 Aug 2025	Belle Etoile 2025	Morpho	Handicap	Crew	27th / 42
11 Aug 2025	Semaine du soir de Founex	Morpho	Handicap	Crew	15th / 37
9 Aug 2025	Régate des Châteaux	Morpho	Handicap	Crew	11th / 26
5 Jul 2025	Les 6 Heures de Nernier Et Criterium Surprise de Nernier - Yvoire (Acte 6 Trophée Europ'sails)	Morpho	Handicap	Crew	12th / 50
10 May 2025	Ouverture du CdPL 2025 - Crans	Morpho	Handicap	Crew	19th / 35
8 Jun 2024	Genève-Rolle-Genève 2024	Morpho	Handicap	Crew	51st / 197
2 Sep 2023	Le Joran	Morpho	Handicap	Crew	7th / 12
14 Aug 2023	Semaine du soir de Founex 2023	Morpho	Handicap	Crew	20th / 25
13 May 2023	Ouverture du CdPL 2023	Morpho	Handicap	Crew	7th / 42
10 Sep 2022	X de Sciez - eMB Léman	Morpho	Handicap	Crew	1st / 39
3 Sep 2022	Le Joran	Morpho	Bateaux jaugés SRS	Crew	2nd / 34
15 Aug 2022	Semaine du soir de Founex 2022	Morpho	Handicap	Crew	14th / 20
13 Aug 2022	Régate des Châteaux 2022	Morpho	Handicap	Crew	23rd / 31
9 Jul 2022	6 Heures de Nernier	Morpho	Bateaux jaugés SRS	Crew	21st / 41
14 May 2022	Ouverture Championnat du Petit Lac	Morpho	Handicap	Crew	27th / 34
4 Sep 2021	Criterium Surprise & Grand Surprise	Morpho	Grand Surprise	Crew	4th / 7
4 Sep 2021	Le Joran	Degado	Handicap	Crew	1st / 2
17 Aug 2021	Semaine du soir de Founex 2021	Morpho	Handicap	Crew	12th / 23
14 Aug 2021	Régate des Châteaux 2021	Morpho	Handicap	Crew	9th / 31
26 Jun 2021	Critérium Toucan Grand-Surprise Luthi 870	Morpho	Grand Surprise	Crew	2nd / 8

Ratings

Class	Rating	Rank	Adj. ±
All classes Crew	220 provisional	#13161 band 7559–22027	—
Grand Surprise Crew	163 provisional	#21 band 8–36	−3.5

4 more classes, not yet ranked

Jaugé SRS 2018 · Crew · 4 races, 2 events · rating -7
All classes · Helm · 4 races, 1 event · rating -86
Bateaux jaugés SRS · Crew · 3 races, 3 events · rating 23
SRS · Crew · 2 races, 1 event · rating 13

Rank among sailors with ten or more rated races over three or more events, all time. In brackets, the ranks this rating cannot be told apart from. Adj. ± is the adjusted plus-minus in points of fleet beaten.

Helm and crew

As helm	1 events	0 wins	beats 33%
As crew	41 events	2 wins	beats 58%

How they race

Closer	+14 pts	last race of an event vs. the rest
Comeback	−10 pts	the race after a bottom-half finish
Consistency	56%	100% = the same result every event
Big fleets (25+)	58%	of the fleet beaten
Small fleets (<12)	54%	of the fleet beaten

Head to head

Helm	Races	W–L
Maurice Gay	69	35–28
Bernard Borter	50	7–39
Christian Hasler	44	20–20
Tony Lerch	36	9–24
Jenifer Schlup	36	25–9
Stefan Huber	32	17–13
Alexandre Vandini	31	16–11
Yvan Glatz	29	9–18
Didier Fert	28	13–11
Daniel Huber	28	16–7
Frédéric Abbet	26	22–0
Martine Caffier	25	16–7

Most-beaten opponent: Frédéric Abbet (22–0).

Seasons

Year	Events	Wins	Beat
2026	4	0	35%
2025	6	0	54%
2024	1	0	75%
2023	3	0	51%
2022	6	1	54%
2021	6	1	70%
2020	5	0	59%
2019	6	0	59%
2018	4	0	62%
2017	1	0	70%

Boats

Morpho · Bateaux jaugés SRS, Handicap, Grand Surprise, SRS, Jaugé SRS 2018 · 35 events · 2017–2026
X-Treme 26 · Handicap, Jaugé SRS 2018 · 5 events · 2018–2020
Phénix · Handicap · 1 events · 2026
Degado · Handicap · 1 events · 2021

Where they race

Unknown · 41 events

Is this you?

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

Crew rating across all classes: 220 (±175), #13,161.Helm rating across all classes: -86 (±218). Compiled from public results; not an official ranking.