Jason Baas

Rated since March 2025

1042 Rapid

RIVALRY

Nemesis

Jiang, Z. (Zhining)

Games: 5 · Win rate: 60%

Kryptonite

Leferink, M. (Maxim)

Games: 3 · Win rate: 0%

Easy Target

Tjoonk, G. (Guus)

Games: 3 · Win rate: 100%

The good & the bad

Best wins

STEENHAGEN, M. (MIKA) 1115

12937 JSV Minerva interne competitie 09-10-2025 t/m 29-01-2026 (030021) · Thursday 9 October 2025

LYDALL, J. (JAYDEN) 1046

10959 JSV Minerva interne competitie 23-01-2025 t/m 02-06-2025 (030021) · Thursday 6 February 2025

BEL VAN, V. (VINCENT) 971

12937 JSV Minerva interne competitie 09-10-2025 t/m 29-01-2026 (030021) · Thursday 20 November 2025

WIEKENS, S. (SIETSKA) 947

13450 JSV Minerva interne competitie 05-02-2026 t/m 19-03-2026 (030021) · Thursday 5 March 2026

JIANG, Z. (ZHINING) 857

12937 JSV Minerva interne competitie 09-10-2025 t/m 29-01-2026 (030021) · Thursday 15 January 2026

Worst losses

GÜLTEKIN, M. (MEHMET ALI) 654

11125 JSV Minerva interne competitie 20-03-2025 t/m 10-04-2025 (030021) · Thursday 27 March 2025

KOOIJ, D. (DJAYDEN) 753

9362 JSV Minerva interne competitie 12-09-2024 t/m 10-10-2024 (030021) · Thursday 10 October 2024

JIANG, Z. (ZHINING) 861

12143 JSV Minerva interne competitie 11-09-2025 t/m 02-10-2025 (030021) · Thursday 18 September 2025

STEVERINK, L. (LAURENS) 976

10611 JSV Minerva interne competitie 07-11-2024 t/m 16-01-2025 (030021) · Thursday 7 November 2024

TRUMPI, L. (LUUK) 999

9481 SBO jeugd PK Groep 1 · Saturday 1 February 2025

No FIDE-rated tournaments found.

JSV Minerva interne competitie 05-02-2026 t/m 19-03-2026 (030021) Thursday 4 September 2025 +4–2=0 +45.8

JSV Minerva interne competitie 09-10-2025 t/m 29-01-2026 (030021) Thursday 4 September 2025 +3–3=0 +90.0

JSV Minerva interne competitie 11-09-2025 t/m 02-10-2025 (030021) Thursday 4 September 2025 +3–2=0 +27.6

SBO jeugd PK Groep 1 Saturday 1 February 2025 +0–6=0 -128.9

JSV Minerva interne competitie 08-05-2025 t/m 12-06-2025 (030021) Sunday 1 September 2024 +1–0=0 +10.0

JSV Minerva interne competitie 20-03-2025 t/m 10-04-2025 (030021) Sunday 1 September 2024 +2–1=0 +5.4

JSV Minerva interne competitie 23-01-2025 t/m 02-06-2025 (030021) Sunday 1 September 2024 +2–0=0 +65.2

JSV Minerva interne competitie 07-11-2024 t/m 16-01-2025 (030021) Sunday 1 September 2024 +0–2=0 -71.5

JSV Minerva interne competitie 12-09-2024 t/m 10-10-2024 (030021) Sunday 1 September 2024 +3–1=0 -46.1

Rating History

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Peak Ratings

Rapid 1042 May 1, 2026

Games

Wins 18

Losses 17

Draws 0

Win Rate 51%

Performance by Color

Color	Wins	Draws	Losses	Win Rate
White	9	0	8	53%
Black	9	0	9	50%

Recent Matches

Leferink, M. (Maxim) (1653) Thursday 12 March 2026 LOSS -0.5

Wiekens, S. (Sietska) (947) Thursday 5 March 2026 WIN +18.9

Tjoonk, G. (Guus) (627) Thursday 5 February 2026 WIN +4.5

Jiang, Z. (Zhining) (857) Thursday 15 January 2026 WIN +23.2

Apell, N. (Nino) (1172) Thursday 8 January 2026 LOSS -8.2

Leferink, M. (Maxim) (1665) Thursday 27 November 2025 LOSS -0.1

Bel van, V. (Vincent) (971) Thursday 20 November 2025 WIN +32.6

Jong de, T. (Thimo) (1163) Thursday 6 November 2025 LOSS -7.7

Steenhagen, M. (Mika) (1115) Thursday 9 October 2025 WIN +50.3

Roukema, S. (Sem) (685) Thursday 2 October 2025 WIN +18.3

Kooij, D. (Djayden) (736) Thursday 25 September 2025 WIN +23.0

Jiang, Z. (Zhining) (861) Thursday 18 September 2025 LOSS -26.6

Lydall, J. (Jayden) (1068) Thursday 11 September 2025 LOSS -11.6

Gültekin, M. (Mehmet Ali) (757) Thursday 11 September 2025 WIN +24.6

Gültekin, I. (Ibrahim) (487) Thursday 8 May 2025 WIN +10.0

Klieverik, M. (Mats) Thursday 10 April 2025 WIN

Gültekin, M. (Mehmet Ali) (654) Thursday 27 March 2025 LOSS -37.7