KNSB FIDE
SO

Sjaak Oosterlaken

Rated since March 2026

1821 Classic
1786 Rapid
1662 Blitz

RIVALRY

Nemesis
Roebers, J.S. (Jan)
Games: 4 · Win rate: 0%

The good & the bad

Best wins
LOUW DE, P.L.J.M. (PETER) 1869
10470 Tata Steel Chess Tournament 2026 Tienkampen · Wednesday 28 January 2026
PINXTEREN VAN, G. (GERARD) 1807
10470 Tata Steel Chess Tournament 2026 Tienkampen · Tuesday 27 January 2026
MUTTA, S. (SEVYA SONIT) 1765
12993 KNSB competitie 2025-2026 Klasse 6 ronde 6 · Saturday 7 February 2026
TIMMER, E. (ERNST) 1730
12774 SOS competitie 2025/2026 Lijst 1 feb · Monday 12 January 2026
KRUIJK VAN DER, M. (MARK) 1728
12471 SOS competitie 2025/2026 Lijst 1 jan · Friday 28 November 2025
Worst losses
RIETVELD, T. (TYGO) 1489
12006 NK Snelschaak voor clubteams Groep A · Sunday 29 March 2026
STAM, M. (MICK) 1632
12006 NK Snelschaak voor clubteams Groep A · Sunday 29 March 2026
BAJRAMOVIC, A. (ALEN) 1678
12006 NK Snelschaak voor clubteams Groep A · Sunday 29 March 2026
CLAESSENS, R. (REMCO) 1842
12775 SOS competitie 2025/2026 Lijst 1 mrt · Monday 2 February 2026
WAGENAAR, H.T. (HARM THEO) 1855
10470 Tata Steel Chess Tournament 2026 Tienkampen · Saturday 31 January 2026
NK Snelschaak voor clubteams Groep A Sunday 29 March 2026 +2–11=1 -78.5
Tata Steel Chess Tournament 2026 Tienkampen Friday 16 January 2026 +2–1=6 +22.3
KNSB competitie 2025-2026 Klasse 6 ronde 5 Saturday 20 September 2025 +0–1=0 -11.3
KNSB competitie 2025-2026 Klasse 6 ronde 7 Saturday 20 September 2025 +0–0=1 -6.2
KNSB competitie 2025-2026 Klasse 6 ronde 6 Saturday 20 September 2025 +1–0=0 +10.6
SOS competitie 2025/2026 Lijst 1 mei Monday 1 September 2025 +0–1=0 -9.8
SOS competitie 2025/2026 Lijst 1 apr Monday 1 September 2025 +0–0=1 -1.7
SOS competitie 2025/2026 Lijst 1 mrt Monday 1 September 2025 +0–1=0 -11.7
SOS competitie 2025/2026 Lijst 1 feb Monday 1 September 2025 +1–0=0 +10.1
SOS competitie 2025/2026 Lijst 1 jan Monday 1 September 2025 +1–0=0 +10.1

Rating History

Loading rating history...

Peak Ratings

Classic 1840 March 1, 2026
Rapid 1786 March 1, 2026
Blitz 1741 March 1, 2026

Games

Wins 7
Losses 15
Draws 9
Win Rate 23%

Performance by Color

Color Wins Draws Losses Win Rate
White 3 4 7 21%
Black 4 5 8 24%

Recent Matches

Meijers, M. (Matthijs) (1898) Tuesday 21 April 2026 LOSS -9.8
Rietveld, T. (Tygo) (1489) Sunday 29 March 2026 LOSS -20.3
Pilon, J. (Jeffrey) (1913) Sunday 29 March 2026 LOSS -6.8
Stam, M. (Mick) (1632) Sunday 29 March 2026 WIN +8.8
Rietveld, T. (Tygo) (1489) Sunday 29 March 2026 DRAW -7.8
Pilon, J. (Jeffrey) (1913) Sunday 29 March 2026 LOSS -6.8
Stam, M. (Mick) (1632) Sunday 29 March 2026 LOSS -16.2
Gafurov, B. (Bulat) (1912) Sunday 29 March 2026 LOSS -6.9
FM Roebers, J.S. (Jan) (2088) Sunday 29 March 2026 LOSS -2.8
Bajramovic, A. (Alen) (1678) Sunday 29 March 2026 LOSS -14.7
Gafurov, B. (Bulat) (1912) Sunday 29 March 2026 LOSS -6.9
FM Roebers, J.S. (Jan) (2088) Sunday 29 March 2026 LOSS -2.8
FM Roebers, J.S. (Jan) (2088) Sunday 29 March 2026 LOSS -2.8
Bajramovic, A. (Alen) (1678) Sunday 29 March 2026 WIN +10.3
FM Roebers, J.S. (Jan) (2088) Sunday 29 March 2026 LOSS -2.8
Roël, W. (Wytze) (1874) Saturday 28 March 2026 LOSS -11.3
Leijgraaff, P. (Peter) (1791) Monday 9 March 2026 DRAW -1.7
Hoogerwaard, S. (Samantha) (1648) Saturday 7 March 2026 DRAW -6.2
Mutta, S. (Sevya Sonit) (1765) Saturday 7 February 2026 WIN +10.6
Claessens, R. (Remco) (1842) Monday 2 February 2026 LOSS -11.7