PLAYER PAGE
Personal
Ji, Y (Yufei)
Chess SA id
1180319795FIDE id
?Date of birth
2018-09-17 (U10)Gender
MaleRegion
Johannesburg Metro (GJM)Citizen
RSATitles
Chess SA registered
NoLast active game
2025-11-01Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1233 | 1199.9 | 1239.2 | 1200 |
| Raw rating | 1233 | 1199.9 | 1239.2 | 1200 |
| Weighted rating | 1205.1 | 1199.9 | 1206.1 | 1200 |
| Weighted performance | 0 | 0 | 0 | 0 |
| Floor | 733 | 699.9 | 739.2 | 700 |
| K-factor | 36 | 40 | 36 | 36 |
| Min/Max rating change allowed | 158.2 | 165.8 | 156.8 | 165.8 |
| Highest rating | 12332025-11-30 | 1199.92025-05-08 | 1239.22025-11-30 | 12002025-06-01 |
| Highest raw rating | 12332025-11-30 | 1199.92025-05-08 | 1239.22025-11-30 | 12002025-06-01 |
| Highest weighted rating | 1202.62025-11-30 | 1199.92025-05-08 | 1203.12025-11-30 | 12002025-06-01 |
| Highest weighted performance | 01900-01-01 | 01900-01-01 | 01900-01-01 | 01900-01-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | 0 | 0 | 0 | 0 |
| New rating | 1233 | 1199.9 | 1239.2 | 1200 |
| Analysis | ||||
| Rating | 1233 | 1199.9 | 1239.2 | 1200 |
| Raw rating | 1233 | 1199.9 | 1239.2 | 1200 |
| Weighted rating | 1205.1 | 1199.9 | 1206.1 | |
| Weighted performance | 0 | 0 | 0 | |
| K-factor | 36 | 40 | 36 | 36 |
| Floor | 733 | 699.9 | 739.2 | 700 |
| Max/Min rating change allowed | 158.2 | 165.8 | 156.8 | 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 | 1233 | 1199.9 | 1239.2 | 1200 |
| New weighted rating | 1207.5 | 1199.9 | 1209 | 1200 |
| New weighted performance | 0 | 0 | 0 | 0 |
| Temp new rating | 1233 | 1199.9 | 1239.2 | 1200 |
| Temp new rating +/- | 0 | 0 | 0 | 0 |
| Final new rating +/- | 0 | 0 | 0 | 0 |
| New rating | 1233 | 1199.9 | 1239.2 | 1200 |
| New K-factor | 36 | 40 | 36 | 36 |
| New floor | 733 | 699.9 | 739.2 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 11 | 5 | 6 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 11 | 5 | 6 | 0 |
| Games since | |||||||||||||||||
| Main11 | Standard5 | Rapid6 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | U8 | ||||||||||||||||
| Region | Johannesburg Metro (GJM) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U8 | -1 | -1 | -1 | ||||||||||||||
| U8 Male | -1 | -1 | -1 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U8 | -1 | -1 | -1 | ||||||||||||||
| U8 Male | -1 | -1 | -1 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U8 | -1 | -1 | -1 | ||||||||||||||
| U8 Male | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U8 | -1 | -1 | -1 | ||||||||||||||
| U8 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 | 11 | 6 | 54.55 | 38.6 | 1237.9 | 1276.5 |
| Standard | 5 | 2 | 40 | -85 | 1218.7 | 1133.7 |
| Rapid | 6 | 4 | 66.67 | 141.7 | 1253.9 | 1395.6 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 11 | 6 | 54.55 | 38.6 | 1237.9 | 1276.5 |
| Standard | 5 | 2 | 40 | -85 | 1218.7 | 1133.7 |
| Rapid | 6 | 4 | 66.67 | 141.7 | 1253.9 | 1395.6 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2026-01-01 | 1233 | 1199.9 | 1239.2 | 1200 |
| 2025-11-30 | 1233 | 1199.9 | 1239.2 | 1200 |
| 2025-11-01 | 1199.9 | 1199.9 | 1200 | 1200 |
| 2025-09-30 | 1199.9 | 1199.9 | 1200 | 1200 |
| 2025-09-01 | 1199.9 | 1199.9 | 1200 | 1200 |
| 2025-08-01 | 1199.9 | 1199.9 | 1200 | 1200 |
| 2025-07-01 | 1199.9 | 1199.8 | 1200 | 1200 |
| 2025-06-01 | 1199.1 | 1198.9 | 1200 | 1200 |
| 2025-05-01 | 1200 | 1200 | 1200 | 1200 |
| 2025-04-01 | 1200 | 1200 | 1200 | 1200 |
| 2025-03-01 | 1200 | 1200 | 1200 | 1200 |
| 2025-02-01 | 1200 | 1200 | 1200 | 1200 |
| 2025-01-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-12-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-11-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-10-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-09-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-11-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-07-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-06-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-05-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-04-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-03-01 | 1200 | 1200 | 1200 | 1200 |
| 2024-02-01 | 1200 | 1200 | 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 |
|---|
Last 500 tournaments since 01 January 2018
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | MCA Year End Rapid 2025 (U8) | 2025-11-01 | 2025-11-01 | Rapid | Johannesburg Metro (GJM) | 7 | 6 | 4 | Yes | Analysis |
| 2 | CPH May 2025 (E) | 2025-05-03 | 2025-05-03 | Standard | Johannesburg Metro (GJM) | 5 | 5 | 2 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentCPH May 2025 | TournamentCPH May 2025 | ||||||
| date2025-05-03 | rnd2 | typeStandard | result1 | date2025-05-03 | rnd3 | typeStandard | result1 | ||
| OpponentGu, R (Ruchen) | OpponentWang, X (Xiaozhi) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentCPH May 2025 | TournamentCPH May 2025 | ||||||
| date2025-05-03 | rnd2 | typeStandard | result1 | date2025-05-03 | rnd3 | typeStandard | result1 | ||
| OpponentGu, R (Ruchen) | OpponentWang, X (Xiaozhi) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentCPH May 2025 | TournamentCPH May 2025 | ||||||
| date2025-05-03 | rnd2 | typeStandard | result1 | date2025-05-03 | rnd3 | typeStandard | result1 | ||
| OpponentGu, R (Ruchen) | OpponentWang, X (Xiaozhi) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | TournamentCPH May 2025 | TournamentCPH May 2025 | ||||||
| date2025-05-03 | rnd2 | typeStandard | result1 | date2025-05-03 | rnd3 | typeStandard | result1 | ||
| OpponentGu, R (Ruchen) | OpponentWang, X (Xiaozhi) | ||||||||
| # | 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 | Jansen van Rensburg ,J (Janco) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1230.2 | 805.2 | 1236.3 | 805.2 | 0 | 0 | 0 | 0 | ||||||
| 2 | Gu ,R (Ruchen) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 3 | Wang ,X (Xiaozhi) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1200 | 1625 | 1200 | 1625 | 0 | 0 | 0 | 0 | ||||||
| 4 | Sooganchand ,G (Gia) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1225.1 | 800.1 | 1228.2 | 800.1 | 0 | 0 | 0 | 0 | ||||||
| 5 | Hsu ,E (Emily) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1238.1 | 813.1 | 1244.6 | 813.1 | 0 | 0 | 0 | 0 | ||||||
| 6 | Liu ,K (Kaireen) | 1 | 0 | -425 | 0 | 0 | 0 | 1 | 0 | -425 | 0 | 0 | 0 |
| 1280.7 | 855.7 | 0 | 0 | 1199.8 | 855.7 | 0 | 0 | ||||||
| 7 | Zhang ,J (Jinmeng) | 1 | 1 | 425 | 0 | 0 | 0 | 1 | 1 | 425 | 0 | 0 | 0 |
| 1200.7 | 1625.7 | 0 | 0 | 1199.5 | 1625.7 | 0 | 0 | ||||||
| 8 | Fair ,J (Joel) | 1 | 0 | -425 | 0 | 0 | 0 | 1 | 0 | -425 | 0 | 0 | 0 |
| 1200 | 775 | 0 | 0 | 1200 | 775 | 0 | 0 | ||||||
| 9 | Liebenberg ,A (Arabella) | 1 | 1 | 425 | 0 | 0 | 0 | 1 | 1 | 425 | 0 | 0 | 0 |
| 1241.6 | 1666.6 | 0 | 0 | 1200 | 1666.6 | 0 | 0 | ||||||
| 10 | Mfazwe ,P (Phumla) | 1 | 1 | 425 | 0 | 0 | 0 | 1 | 1 | 425 | 0 | 0 | 0 |
| 1403.8 | 1828.8 | 0 | 0 | 1288.5 | 1828.8 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|