Player Page

Roos, J (John)
Dob: 1962/01/23 (Adult)
Gender: Male
Chess SA id: 1620305882
FIDE id:
Region: Sarah Baartman (ESB)
Citizen: RSA
Title(s):
Last active: 2024/05/25 (126 days ago)
Ratings
Raw rating=Current rating, Weighted rating (WR)=Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Current Raw rating1153.0
Current Weighted rating1189.2
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1189.2
Current highest rating achieved1153.0
Current floor (min rating allowed)653.0
Current K-factor40
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±177.3
Current Raw change used (final)0.0
Projected new Raw rating1153.0
Projected new Weighed rating1093.7
Projected new Weighted performance248.8
Projected new final Raw rating (if new WP > new Raw)1153.0
Projected new highest rating1153.0
Projected new floor653.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1153.0
Projected effective change (new Official - current Official)-36.2
Raw rating=Current rating, Weighted rating (WR)=Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Current Raw rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved0.0
Current floor (min rating allowed)700.0
Current K-factor40
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±165.8
Current Raw change used (final)0.0
Projected new Raw rating1200.0
Projected new Weighed rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating0.0
Projected new floor700.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1200.0
Projected effective change (new Official - current Official)=0.0
s
Raw rating=Current rating, Weighted rating (WR)=Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Current Raw rating1091.2
Current Weighted rating1175.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1175.0
Current highest rating achieved1091.2
Current floor (min rating allowed)591.2
Current K-factor40
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±193.6
Current Raw change used (final)0.0
Projected new Raw rating1091.2
Projected new Weighed rating1080.1
Projected new Weighted performance261.9
Projected new final Raw rating (if new WP > new Raw)1091.2
Projected new highest rating1091.2
Projected new floor591.2
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1091.2
Projected effective change (new Official - current Official)-83.8
Raw rating=Current rating, Weighted rating (WR)=Weighted average of current/new Raw rating + last 23 published Raw ratings), Weighted performance (WP)=Weighted average of last 5 tournaments
Current Raw rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved0.0
Current floor (min rating allowed)700.0
Current K-factor40
Games played this month0
Score (S)0.0
Expected score (We)0.00
Difference (S-We)0.00
Current Raw change (no limits, including tournament time weight)0.0
Current min/max change allowed (with limits)±165.8
Current Raw change used (final)0.0
Projected new Raw rating1200.0
Projected new Weighed rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating0.0
Projected new floor700.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1200.0
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
1 Aston Bay 2024 (Open) 2024/05/25 2024/05/25 Sarah Baartman (ESB) Rapid 18 0.44 7 6 0.0 1200.0 1200.0 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
1 Aston Bay 2024 (Open) 2024/05/25 2024/05/25 Sarah Baartman (ESB) Rapid 18 0.44 7 6 0.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 6 0 0 6 0.0 0.0 -425.0 1246.0 821.0
White 3 0 0 3 0.0 0.0 -425.0 1247.5 822.5
Black 3 0 0 3 0.0 0.0 -425.0 1244.5 819.5
Standard All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Rapid All 6 0 0 6 0.0 0.0 -425.0 1246.0 821.0
White 3 0 0 3 0.0 0.0 -425.0 1247.5 822.5
Black 3 0 0 3 0.0 0.0 -425.0 1244.5 819.5
Blitz All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 6 0 0 6 0.0 0.0 -425.0 1246.0 821.0
White 3 0 0 3 0.0 0.0 -425.0 1247.5 822.5
Black 3 0 0 3 0.0 0.0 -425.0 1244.5 819.5
Standard All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Rapid All 6 0 0 6 0.0 0.0 -425.0 1246.0 821.0
White 3 0 0 3 0.0 0.0 -425.0 1247.5 822.5
Black 3 0 0 3 0.0 0.0 -425.0 1244.5 819.5
Blitz All 0 0 0 0 0.0 0.0 0.0 0.0 0.0
White 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Black 0 0 0 0 0.0 0.0 0.0 0.0 0.0
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 2130151699 Watson, T (Tayla) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
2 1120137454 Wang, C (Chen) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
3 158040247 Van Nieuwenhuizen, PB (Petrus) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
4 1840304722 Van Gent, E (Ettienne) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
5 1990138982 Sibengile, Z (Zolani) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
6 1080153917 Blom, B (Brian) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list