CHESS SA Ratings Database

Player tournament rating analysis

Player

Grobbelaar, J (Jacqui)

[294011237] from Tshwane (GTP)
1670

Rating

Standard

-11.2

Rating change

K = 21.1

1596

Performance

 

Yes

Count for rating

OK

Full Analysis

Item Desctiption
Tournament 2018 Capablanca Chess Festival (Swiss A)
Grand Prix tournament
Tournament format Swiss
Rating type Standard
National/FIDE rated National
Host region Tshwane (GTP)
Tournament id 20180891
Tournament group id 20180888
Start 2018/04/27
End 2018/04/29
Rated 2018/05/02
Rating 1670
Rated games 7
Rated score 4.0
Rated percent 57.1
Rated Dp 50
Rated average opponent rating 1545.57
Rated performance 1596
Rated expected score (We) 4.53
Rated score difference (Score-We) -0.53
K-factor 21.1
Temporary rating change -11.2
Penalties 0.0
TOTAL RATING CHANGE -11.2
Count for rating OK
Total rated games with White and Black 7
Default wins 0
Default losses (possible penalties) 0
Byes 0
Tournament rank 14
Final position (single) 15
Final position (shared) 13

Opponents

RndDateOpponentRatingTitleFedColResWeSWeKRpmCFRReason
1 2018/04/27 Lubbe, DS (David) 1341 1 0.88 0.12 21.1 2.5 OK
2 2018/04/27 Lebea, BE (Botlhale) 1764 ½ 0.37 0.13 21.1 2.7 OK
3 2018/04/27 Swartz, DS (David) 1799 0 0.33 -0.33 21.1 -7.0 OK
4 2018/04/28 Acar, CG (Cameron) 1461 ½ 0.77 -0.27 21.1 -5.7 OK
5 2018/04/28 Marais, N (Nina) 1624 WUM ½ 0.56 -0.06 21.1 -1.3 OK
6 2018/04/28 Wolmarans, R (Riekie) 1394 ½ 0.83 -0.33 21.1 -7.0 OK
7 2018/04/29 Valashia, IH (Itumeleng) 1436 1 0.79 0.21 21.1 4.4 OK