PLAYER PAGE
Personal
Keyser, AJ (Alxander Jan)
Chess SA id
1100104933FIDE id
?Date of birth
2010-10-26 (U16)Gender
MaleRegion
Ekurhuleni (GE)Citizen
RSATitles
Chess SA registered
NoLast active game
2025-08-16Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1214.3 | 1217.2 | 1200 | 1200 |
| Raw rating | 1214.3 | 1217.2 | 1200 | 1200 |
| Weighted rating | 1201.7 | 1202.1 | 1200 | 1200 |
| Weighted performance | 0 | 0 | 0 | 0 |
| Floor | 714.3 | 717.2 | 700 | 700 |
| K-factor | 36 | 36 | 36 | 36 |
| Min/Max rating change allowed | 162.5 | 161.8 | 165.8 | 165.8 |
| Highest rating | 1214.32025-09-01 | 1217.22025-09-01 | 12002018-10-01 | 12002018-10-01 |
| Highest raw rating | 1214.32025-09-01 | 1217.22025-09-01 | 12002024-02-01 | 12002024-02-01 |
| Highest weighted rating | 12002018-02-01 | 12002018-02-01 | 12002018-10-01 | 12002018-10-01 |
| Highest weighted performance | 12002018-02-01 | 12002018-02-01 | 12002024-02-01 | 12002024-02-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | 0 | 0 | 0 | 0 |
| New rating | 1214.3 | 1217.2 | 1200 | 1200 |
| Analysis | ||||
| Rating | 1214.3 | 1217.2 | 1200 | 1200 |
| Raw rating | 1214.3 | 1217.2 | 1200 | 1200 |
| Weighted rating | 1201.7 | 1202.1 | 1200 | |
| Weighted performance | 0 | 0 | 0 | |
| K-factor | 36 | 36 | 36 | 36 |
| Floor | 714.3 | 717.2 | 700 | 700 |
| Max/Min rating change allowed | 162.5 | 161.8 | 165.8 | 165.8 |
| Games | 0 | 0 | 0 | 0 |
| Score | 0 | 0 | 0 | 0 |
| Expected score | 0 | 0 | 0 | 0 |
| Score-Expected | 0 | 0 | 0 | 0 |
| Temp raw +/- | 0 | 0 | 0 | 0 |
| Final raw +/- | 0 | 0 | 0 | 0 |
| New raw rating | 1214.3 | 1217.2 | 1200 | 1200 |
| New weighted rating | 1202.9 | 1203.5 | 1200 | 1200 |
| New weighted performance | 0 | 0 | 0 | 0 |
| Temp new rating | 1214.3 | 1217.2 | 1200 | 1200 |
| Temp new rating +/- | 0 | 0 | 0 | 0 |
| Final new rating +/- | 0 | 0 | 0 | 0 |
| New rating | 1214.3 | 1217.2 | 1200 | 1200 |
| New K-factor | 36 | 36 | 36 | 36 |
| New floor | 714.3 | 717.2 | 700 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 1 | 1 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 6 | 6 | 0 | 0 |
| Games since | |||||||||||||||||
| Main1 | Standard1 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | U16 | ||||||||||||||||
| Region | Ekurhuleni (GE) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U16 | -1 | -1 | -1 | ||||||||||||||
| U16 Male | -1 | -1 | -1 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U16 | -1 | -1 | -1 | ||||||||||||||
| U16 Male | -1 | -1 | -1 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U16 | -1 | -1 | -1 | ||||||||||||||
| U16 Male | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U16 | -1 | -1 | -1 | ||||||||||||||
| U16 Male | -1 | -1 | -1 | ||||||||||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 0 | 0 | 0 | 0 | 0 | 0 |
| Standard | 0 | 0 | 0 | 0 | 0 | 0 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 1 | 1 | 100 | 425 | 1200 | 1625 |
| Standard | 1 | 1 | 100 | 425 | 1200 | 1625 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 6 | 3.5 | 58.33 | 70.8 | 1197.4 | 1268.2 |
| Standard | 6 | 3.5 | 58.33 | 70.8 | 1197.4 | 1268.2 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2025-11-01 | 1214.3 | 1217.2 | 1200 | 1200 |
| 2025-09-30 | 1214.3 | 1217.2 | 1200 | 1200 |
| 2025-09-01 | 1214.3 | 1217.2 | 1200 | 1200 |
| 2025-08-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2025-07-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2025-06-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2025-05-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2025-04-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2025-03-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2025-02-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2025-01-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2024-12-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2024-11-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2024-10-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2024-09-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2024-08-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2024-07-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2024-09-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2024-05-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2024-04-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2024-03-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2024-02-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2024-01-01 | 1198 | 1197.6 | 1200 | 1200 |
| 2023-12-01 | 1198 | 1197.6 | 1200 | 1200 |
Comming soon.
Tournaments
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2025 Gauteng Top Schools Teams (U15) | 2025-08-30 | 2025-08-30 | Standard | Tshwane (GTP) | 5 | 0 | 0 | No | Analysis |
| 2 | Ekurhuleni North Schools Teams 2025 (U17 Open) | 2025-08-16 | 2025-08-16 | Standard | Ekurhuleni (GE) | 5 | 1 | 1 | Yes | Analysis |
Last 500 tournaments since 01 January 2018
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2025 Gauteng Top Schools Teams (U15) | 2025-08-30 | 2025-08-30 | Standard | Tshwane (GTP) | 5 | 0 | 0 | No | Analysis |
| 2 | Ekurhuleni North Schools Teams 2025 (U17 Open) | 2025-08-16 | 2025-08-16 | Standard | Ekurhuleni (GE) | 5 | 1 | 1 | Yes | Analysis |
| 3 | Ekurhuleni North District Schools Final 2018 (Primary School Reserves) | 2018-08-04 | 2018-08-04 | Standard | Ekurhuleni (GE) | 5 | 5 | 2.5 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentEkurhuleni North District Schools Final 2018 | TournamentEkurhuleni North Schools Teams 2025 | ||||||
| date2018-08-04 | rnd5 | typeStandard | result1 | date2025-08-16 | rnd3 | typeStandard | result1 | ||
| OpponentSimigiannis, A (Antonia) | OpponentSmit, C (Caleb) | ||||||||
| 2 | 1 | TournamentEkurhuleni North District Schools Final 2018 | TournamentEkurhuleni North District Schools Final 2018 | ||||||
| date2018-08-04 | rnd3 | typeStandard | result1 | date2018-08-04 | rnd3 | typeStandard | result1 | ||
| OpponentMyeni, H (Happy) | OpponentMyeni, H (Happy) | ||||||||
| 3 | 1 | TournamentEkurhuleni North District Schools Final 2018 | TournamentEkurhuleni North District Schools Final 2018 | ||||||
| date2018-08-04 | rnd1 | typeStandard | result0.5 | date2018-08-04 | rnd1 | typeStandard | result0.5 | ||
| OpponentThobejane, K (Kabo) | OpponentThobejane, K (Kabo) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentEkurhuleni North District Schools Final 2018 | TournamentEkurhuleni North Schools Teams 2025 | ||||||
| date2018-08-04 | rnd5 | typeStandard | result1 | date2025-08-16 | rnd3 | typeStandard | result1 | ||
| OpponentSimigiannis, A (Antonia) | OpponentSmit, C (Caleb) | ||||||||
| 2 | 1 | TournamentEkurhuleni North District Schools Final 2018 | TournamentEkurhuleni North District Schools Final 2018 | ||||||
| date2018-08-04 | rnd3 | typeStandard | result1 | date2018-08-04 | rnd3 | typeStandard | result1 | ||
| OpponentMyeni, H (Happy) | OpponentMyeni, H (Happy) | ||||||||
| 3 | 1 | TournamentEkurhuleni North District Schools Final 2018 | TournamentEkurhuleni North District Schools Final 2018 | ||||||
| date2018-08-04 | rnd1 | typeStandard | result0.5 | date2018-08-04 | rnd1 | typeStandard | result0.5 | ||
| OpponentThobejane, K (Kabo) | OpponentThobejane, K (Kabo) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentEkurhuleni North District Schools Final 2018 | TournamentEkurhuleni North Schools Teams 2025 | ||||||
| date2018-08-04 | rnd5 | typeStandard | result1 | date2025-08-16 | rnd3 | typeStandard | result1 | ||
| OpponentSimigiannis, A (Antonia) | OpponentSmit, C (Caleb) | ||||||||
| 2 | 1 | TournamentEkurhuleni North District Schools Final 2018 | TournamentEkurhuleni North District Schools Final 2018 | ||||||
| date2018-08-04 | rnd3 | typeStandard | result1 | date2018-08-04 | rnd3 | typeStandard | result1 | ||
| OpponentMyeni, H (Happy) | OpponentMyeni, H (Happy) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentEkurhuleni North District Schools Final 2018 | TournamentEkurhuleni North Schools Teams 2025 | ||||||
| date2018-08-04 | rnd5 | typeStandard | result1 | date2025-08-16 | rnd3 | typeStandard | result1 | ||
| OpponentSimigiannis, A (Antonia) | OpponentSmit, C (Caleb) | ||||||||
| 2 | 1 | TournamentEkurhuleni North District Schools Final 2018 | TournamentEkurhuleni North District Schools Final 2018 | ||||||
| date2018-08-04 | rnd3 | typeStandard | result1 | date2018-08-04 | rnd3 | typeStandard | result1 | ||
| OpponentMyeni, H (Happy) | OpponentMyeni, H (Happy) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
Top 10 opponents most often played
| # | Opponent | Main | Standard | Rapid | Blitz | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | ||
| Aor | Prat | Aor | Prat | Aor | Prat | Aor | Prat | ||||||
| 1 | Roux ,J (Juan-Michael) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 775 | 1200 | 775 | 0 | 0 | 0 | 0 | ||||||
| 2 | Matthys ,H (Hayden) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 775 | 1200 | 775 | 0 | 0 | 0 | 0 | ||||||
| 3 | Thobejane ,K (Kabo) | 1 | 0.5 | 0 | 1 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1184.7 | 1184.7 | 1181.6 | 1184.7 | 0 | 0 | 0 | 0 | ||||||
| 4 | Simigiannis ,A (Antonia) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 5 | Smit ,C (Caleb) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 6 | Myeni ,H (Happy) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|