KNSB FIDE
RK

Ronald Keizer

Rated since January 2023

2005 Classic

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins
BRUMMELEN VAN, K.B. (KEVIN) 2164
10494 KNSB competitie 2024-2025 Klasse 3 ronde 6 · Saturday 8 February 2025
PORTE, H. (HENRIK) 2139
7605 SOS Competitie 2023/2024 November 2023 · Friday 10 November 2023
MULLER, S.K. (KENNETH) 2124
13528 KNSB competitie 2025-2026 Klasse 4 ronde 9 · Saturday 11 April 2026
NITRAUW, P.K. (PETER) 2077
11251 KNSB competitie 2024-2025 Klasse 3 ronde 9 · Saturday 10 May 2025
REDEKER, J.B. (JOHAN) 2049
7805 KNSB competitie 2023-2024 Klasse 4 ronde 4 · Saturday 25 November 2023
Worst losses
BLOEMHOF, R.B.P. (RUBEN) 1738
7580 KNSB competitie 2023-2024 Klasse 4 ronde 1 · Saturday 16 September 2023
JERPHANION, L.B.F. (LUCIEN) 1795
6235 KNSB competitie 2022-2023 Klasse 4 ronde 5 · Saturday 17 December 2022
MILTENBURG, A.G. (ALEXANDER) 1825
7606 SOS Competitie 2023/2024 December 2023 · Friday 1 December 2023
HOEKSTRA, S. (SJOERD) 1887
7016 KNSB competitie 2022-2023 Klasse 4 ronde 9 · Saturday 22 April 2023
KEMPERMAN, J.G. (HANS) 1905
8072 KNSB competitie 2023-2024 Klasse 4 ronde 5 · Saturday 16 December 2023
No FIDE-rated tournaments found.
KNSB competitie 2025-2026 Klasse 4 ronde 9 Saturday 20 September 2025 +1–0=0 +17.1
KNSB competitie 2025-2026 Klasse 4 ronde 6 Saturday 20 September 2025 +0–1=0 -10.3
KNSB competitie 2025-2026 Klasse 4 Ronde 4 Saturday 20 September 2025 +0–0=1 +0.3
KNSB competitie 2025-2026 Klasse 4 ronde 2 Saturday 20 September 2025 +1–0=0 +5.1
KNSB competitie 2025-2026 Klasse 4 ronde 1 Saturday 20 September 2025 +0–1=0 -13.7
KNSB competitie 2024-2025 Klasse 3 ronde 9 Saturday 21 September 2024 +1–0=0 +15.4
KNSB competitie 2024-2025 Klasse 3 ronde 8 Saturday 21 September 2024 +0–1=0 -9.6
KNSB competitie 2024-2025 Klasse 3 ronde 7 Saturday 21 September 2024 +1–0=0 +14.4
KNSB competitie 2024-2025 Klasse 3 ronde 6 Saturday 21 September 2024 +1–0=0 +18.8
KNSB competitie 2024-2025 Klasse 3 ronde 5 Saturday 21 September 2024 +0–1=0 -12.1
KNSB competitie 2024-2025 Klasse 3 ronde 4 Saturday 21 September 2024 +1–0=0 +12.1
KNSB competitie 2024-2025 Klasse 3 ronde 2 Saturday 21 September 2024 +0–0=1 -1.2
SOS Competitie 2024/2025 2025-01 Sunday 1 September 2024 +0–0=1 -4.4
SOS Competitie 2024/2025 2024-12 Sunday 1 September 2024 +0–1=0 -5.9
SOS Competitie 2024/2025 2024-11 Sunday 1 September 2024 +0–0=1 +3.3
SOS Competitie 2024/2025 2024-10 Sunday 1 September 2024 +0–1=0 -8.6
OSBO Cup 2023/2024 Kwartfinales ex SMB en Rhenen Wednesday 1 November 2023 +0–0=1 +3.2
KNSB competitie 2023-2024 Klasse 4 ronde 8 Saturday 16 September 2023 +0–0=1 -3.8
KNSB competitie 2023-2024 Klasse 4 ronde 7 Saturday 16 September 2023 +1–0=0 +7.9
KNSB competitie 2023-2024 Klasse 4 ronde 6 Saturday 16 September 2023 +1–0=0 +12.3
KNSB competitie 2023-2024 Klasse 4 ronde 5 Saturday 16 September 2023 +0–1=0 -14.6
KNSB competitie 2023-2024 Klasse 4 ronde 4 Saturday 16 September 2023 +1–0=0 +16.6
KNSB competitie 2023-2024 Klasse 4 ronde 2 Saturday 16 September 2023 +0–0=1 -4.5
KNSB competitie 2023-2024 Klasse 4 ronde 1 Saturday 16 September 2023 +0–1=0 -19.6
SOS Competitie 2023/2024 Maart 2024 Friday 1 September 2023 +1–0=0 +10.0
SOS Competitie 2023/2024 Februari 2024 Friday 1 September 2023 +1–0=0 +3.9
SOS Competitie 2023/2024 December 2023 Friday 1 September 2023 +0–1=0 -17.2
SOS Competitie 2023/2024 November 2023 Friday 1 September 2023 +1–0=0 +19.2
SOS Competitie 2023/2024 September 2023 Friday 1 September 2023 +0–1=0 -8.0
KNSB competitie 2022-2023 Klasse 4 ronde 9 Saturday 17 September 2022 +0–1=0 -15.1
KNSB competitie 2022-2023 Klasse 4 ronde 8 Saturday 17 September 2022 +1–0=0 +12.9
KNSB competitie 2022-2023 Klasse 4 ronde 7 Saturday 17 September 2022 +1–0=0 +7.8
KNSB competitie 2022-2023 Klasse 4 ronde 6 Saturday 17 September 2022 +1–0=0 +9.9
KNSB competitie 2022-2023 Klasse 4 ronde 5 Saturday 17 September 2022 +0–1=0 -18.5
KNSB competitie 2022-2023 Klasse 4 ronde 4 Saturday 17 September 2022 +0–1=0 -14.2

Team Competition

Current team
ZSG 1
Klasse 4A · 2025-2026 · 5 games
Past teams
ZSG 1
Klasse 3B · 2024-2025
ZSG 1
HKC · 2024-2025
ZSG 1
HKC · 2023-2024
ZSG 1
Klasse 4A · 2023-2024
ZSG 1
Klasse 4A · 2022-2023
ZSG 1
HKA · 2021-2022
ZSG 1
Klasse 3B · 2021-2022
Zwols S.G. 1
HKB · 2019-2020
Zwols S.G. 1
HKB · 2018-2019

Rating History

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Peak Ratings

Classic 2007 June 1, 2025
Rapid 1998 March 1, 2026
Blitz 1998 March 1, 2026

Games

Wins 15
Losses 13
Draws 7
Win Rate 43%

Performance by Color

Color Wins Draws Losses Win Rate
White 10 5 6 48%
Black 5 2 7 36%

Recent Matches

Muller, S.K. (Kenneth) (2124) Saturday 11 April 2026 WIN +17.1
Berg van der, W. (Wessel) (2062) Saturday 28 March 2026 LOSS -10.3
Mostert, D.C.J. (Davin) (2007) Saturday 22 November 2025 DRAW +0.3
Ridder de, H.P.L. (Henk) (1756) Saturday 4 October 2025 WIN +5.1
Brand, N.W. (Niels) (1974) Saturday 20 September 2025 LOSS -13.7
Nitrauw, P.K. (Peter) (2077) Saturday 10 May 2025 WIN +15.4
Vries de, P. (Paul) (2086) Saturday 5 April 2025 LOSS -9.6
Klinge, J.R. (Jim) (2043) Saturday 8 March 2025 WIN +14.4
Brummelen van, K.B. (Kevin) (2164) Saturday 8 February 2025 WIN +18.8
Dijk van, S.L.T. (Simon) (1844) Friday 10 January 2025 DRAW -4.4
Kossen, J. (Johannes) (2003) Saturday 14 December 2024 LOSS -12.1
Jong de, L. (Lode) (2010) Friday 6 December 2024 LOSS -5.9
Kuijper, D. (Daniel) (1965) Saturday 23 November 2024 WIN +12.1
Porte, H. (Henrik) (2073) Friday 15 November 2024 DRAW +3.3
Kraker de, J.A. (Johnny) (1952) Saturday 12 October 2024 DRAW -1.2
Mil van, L.H.F. (Lucas) (2101) Friday 13 September 2024 LOSS -8.6
Broertjes, S.G. (Stephan) (1857) Saturday 23 March 2024 DRAW -3.8
Galekop, W.G. (Wes) (1897) Friday 8 March 2024 WIN +10.0
CM Bus, T.G. (Tom) (2062) Thursday 7 March 2024 DRAW +3.2
Jovanovic, L. (Luka) (1833) Saturday 2 March 2024 WIN +7.9