PLAYER PAGE
Janco Du Preez
1160152343Overberg (WOS)Personal
Main rating
| Rating | 1313.7 |
| K-factor | 36 |
| Floor | 829.9 |
| Highest | 1329.9 (2025-09-01) |
| Min/Max +/- allowed | 138 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1255.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1313.7 |
| K-factor | 36 |
| Floor | 829.9 |
| Highest | 1329.9 (2025-09-01) |
| Min/Max +/- allowed | 137.8 |
Standard rating
| Rating | 1263.5 |
| K-factor | 36 |
| Floor | 795.2 |
| Highest | 1328.2 (2023-05-01) |
| Min/Max +/- allowed | 138.1 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1207.6 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1263.5 |
| K-factor | 36 |
| Floor | 795.2 |
| Highest | 1328.2 (2023-05-01) |
| Min/Max +/- allowed | 138.1 |
Rapid rating
| Rating | 1356.3 |
| K-factor | 36 |
| Floor | 856.3 |
| Highest | 1356.3 (2025-09-30) |
| Min/Max +/- allowed | 132.7 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1248 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1356.3 |
| K-factor | 36 |
| Floor | 856.3 |
| Highest | 1356.3 (2025-09-30) |
| Min/Max +/- allowed | 132.7 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2018-10-01) |
| Min/Max +/- allowed | 165.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | Kingsway Chess Open 2025 (U10) | Rapid | 2025-09-20 | 2025-09-20 | Overberg (WOS) | 6 | 1329.9 | 6 | 4 | 1489.3 | 0 | Details |
| 2 | Western Cape Schools - Top Schools 2025 (U9) | Standard | 2025-09-06 | 2025-09-07 | Overberg (WOS) | 6 | 1329.9 | 6 | 1.5 | 1170.6 | 0 | Details |
| 3 | Overberg Top Schools 2025 (U7+U9) | Standard | 2025-08-02 | 2025-08-02 | Overberg (WOS) | 5 | 1324 | 5 | 3 | 1364 | 0 | Details |
| 4 | Western Cape Schools Individual Championship 2025 (U9 Boys) | Standard | 2025-05-17 | 2025-05-18 | Cape Winelands (WCW) | 6 | 1328.3 | 6 | 3 | 1307.9 | 0 | Details |
| 5 | Overberg Schools - PS Closed 2025 (U9 Boys) | Standard | 2025-03-08 | 2025-03-08 | Overberg (WOS) | 5 | 1287.5 | 5 | 3.5 | 1527.2 | 0 | Details |
| 6 | Overberg Schools - PS Trials (Region 1) 2025 (U9 Boys) | Rapid | 2025-02-22 | 2025-02-22 | Overberg (WOS) | 6 | 1244.1 | 6 | 3.5 | 1333.4 | 0 | Details |
| 7 | Laerskool Welgemoed Rapid 2025 (U10) | Rapid | 2025-02-15 | 2025-02-15 | Cape Town (WCT) | 6 | 1244.1 | 6 | 3 | 1183.4 | 0 | Details |
| 8 | Curro Hermanus Summer Open 2025 (U9) | Rapid | 2025-02-08 | 2025-02-08 | Overberg (WOS) | 6 | 1244.1 | 6 | 4 | 1354.3 | 0 | Details |
| 9 | Overberg Schools & Federation Open 2025 (U9) | Rapid | 2025-02-01 | 2025-02-01 | Overberg (WOS) | 6 | 1244.1 | 6 | 4 | 1387.2 | 0 | Details |
| 10 | Western Cape Top Schools Championship 2024 (U9 Mixed) | Standard | 2024-08-30 | 2024-09-01 | Eden (WEG) | 6 | 1245.3 | 5 | 2 | 1244.6 | 0 | Details |
| 11 | Overberg Schools - Top Schools 2024 (U7+U9 Mixed) | Standard | 2024-07-27 | 2024-07-27 | Overberg (WOS) | 5 | 1197.5 | 5 | 4 | 1464.7 | 0 | Details |
| 12 | Western Cape PS Individuals Championship 2024 (U9 Boys) | Standard | 2024-05-04 | 2024-05-05 | West Coast (WCU) | 6 | 1252.2 | 6 | 1 | 993.5 | 0 | Details |
| 13 | Overberg Schools - PS Closed 2024 (U9 Boys) | Standard | 2024-03-16 | 2024-03-16 | Overberg (WOS) | 5 | 1202.3 | 5 | 3 | 1297.5 | 0 | Details |
| 14 | Overberg Schools - PS Trials Region 3 2024 (U9 Boys) | Rapid | 2024-03-02 | 2024-03-02 | Overberg (WOS) | 5 | 1202.3 | 5 | 4 | 1465.7 | 0 | Details |
| 15 | Overberg Open Rapid 2024 (U7+U9) | Rapid | 2024-01-27 | 2024-01-27 | Overberg (WOS) | 5 | 1205 | 5 | 2.5 | 1184.8 | 0 | Details |
| 16 | Kingsway Open 2023 (U8) | Rapid | 2023-10-28 | 2023-10-28 | Overberg (WOS) | 5 | 1209.6 | 5 | 2.5 | 1169.4 | 0 | Details |
| 17 | Overberg Top Schools 2023 (U7+U9) | Standard | 2023-08-05 | 2023-08-05 | Overberg (WOS) | 5 | 1232.3 | 5 | 2 | 1109.6 | 0 | Details |
| 18 | Western Cape PS Individuals 2023 (U7 Boys) | Standard | 2023-05-05 | 2023-05-06 | Cape Town (WCT) | 6 | 1195.4 | 6 | 4 | 1366.5 | 0 | Details |
| 19 | Overberg School Chess Closed Tournament 2023 (U7 Boys+Girls) | Standard | 2023-03-25 | 2023-03-25 | Overberg (WOS) | 5 | 1200 | 5 | 3 | 1282.2 | 0 | Details |
| 20 | Overberg Primary School Trials (Region 2) | Rapid | 2023-02-24 | 2023-03-10 | Overberg (WOS) | 6 | 1200 | 3 | 0.5 | 922.7 | 0 | Details |
Game statistics ( )
| Games | 0 |
| Wins | 0 |
| Draws | 0 |
| Losses | 0 |
| White | 0 |
| Black | 0 |
| White wins | 0 |
| Black wins | 0 |
| Score | 0 |
| Percent | 0 |
| Dp | 0 |
| AOR | 0 |
| Performance | 0 |
Game statistics ()
| Games | 0 |
| Wins | 0 |
| Draws | 0 |
| Losses | 0 |
| White | 0 |
| Black | 0 |
| White wins | 0 |
| Black wins | 0 |
| Score | 0 |
| Percent | 0 |
| Dp | 0 |
| AOR | 0 |
| Performance | 0 |
Game statistics (History)
| Games | 107 |
| Wins | 54 |
| Draws | 8 |
| Losses | 45 |
| White | 59 |
| Black | 48 |
| White wins | 28 |
| Black wins | 26 |
| Score | 58 |
| Percent | 54.2 |
| Dp | 35.7 |
| AOR | 1252.4 |
| Performance | 1288.2 |
Rankings (Main)
| National | |
| Overall | 5521 |
| Gender | 4591 |
| Age group | 502 |
| Gender/Age | 398 |
| Provincial | |
| Overall | 1671 |
| Gender | 1321 |
| Age group | 164 |
| Gender/Age | 115 |
| Regional | |
| Overall | 113 |
| Gender | 79 |
| Age group | 17 |
| Gender/Age | 11 |
Rankings (Standard)
| National | |
| Overall | 6639 |
| Gender | 5377 |
| Age group | 688 |
| Gender/Age | 536 |
| Provincial | |
| Overall | 1869 |
| Gender | 1430 |
| Age group | 228 |
| Gender/Age | 162 |
| Regional | |
| Overall | 110 |
| Gender | 69 |
| Age group | 21 |
| Gender/Age | 13 |
Rankings (Rapid)
| National | |
| Overall | 1181 |
| Gender | 1003 |
| Age group | 122 |
| Gender/Age | 97 |
| Provincial | |
| Overall | 585 |
| Gender | 484 |
| Age group | 65 |
| Gender/Age | 47 |
| Regional | |
| Overall | 56 |
| Gender | 41 |
| Age group | 7 |
| Gender/Age | 5 |
Rankings (Blitz)
| National | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Provincial | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
| Regional | |
| Overall | -1 |
| Gender | -1 |
| Age group | -1 |
| Gender/Age | -1 |
Performance ( )
| Games | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance ()
| Games | 0 |
| Score | 0 |
| Percent | 0 |
| Aor | 0 |
| Dp | 0 |
| Prat | 0 |
Performance (12 months)
| Games | 28 |
| Score | 15 |
| Percent | 53.6 |
| Aor | 1336.2 |
| Dp | 30.4 |
| Prat | 1366.5 |
Performance (History)
| Games | 107 |
| Score | 58 |
| Percent | 54.2 |
| Aor | 1252.4 |
| Dp | 35.7 |
| Prat | 1288.2 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Badenhorst, R (Rouxan) | 7 | 4 | 3 | Overberg Primary School Trials (Region 2) | Kingsway Chess Open 2025 (U10) | Details |
| Overall | 2 | Crafford, Q (Quade) | 6 | 3 | 3 | Overberg Schools - Top Schools 2024 (U7+U9 Mixed) | Western Cape Schools - Top Schools 2025 (U9) | Details |
| Overall | 3 | Grobbelaar, M (Marlo) | 5 | 3 | 2 | Kingsway Open 2023 (U8) | Kingsway Chess Open 2025 (U10) | Details |
| Overall | 4 | Rock, A (Albert) | 4 | 2 | 2 | Overberg Top Schools 2023 (U7+U9) | Kingsway Chess Open 2025 (U10) | Details |
| Overall | 5 | Faasen, C (Charles) | 4 | 1 | 3 | Overberg Primary School Trials (Region 2) | Overberg Schools - PS Closed 2025 (U9 Boys) | Details |
| Standard | 1 | Crafford, Q (Quade) | 5 | 2 | 3 | Overberg Schools - Top Schools 2024 (U7+U9 Mixed) | Western Cape Schools - Top Schools 2025 (U9) | Details |
| Standard | 2 | Badenhorst, R (Rouxan) | 3 | 1 | 2 | Overberg School Chess Closed Tournament 2023 (U7 Boys+Girls) | Western Cape Schools Individual Championship 2025 (U9 Boys) | Details |
| Standard | 3 | Van Der Westhuizen, E (Erin) | 2 | 1 | 1 | Overberg Schools - Top Schools 2024 (U7+U9 Mixed) | Overberg Top Schools 2025 (U7+U9) | Details |
| Standard | 4 | Huisamen, H (Heinrich) | 2 | 1 | 1 | Overberg Schools - PS Closed 2024 (U9 Boys) | Western Cape PS Individuals Championship 2024 (U9 Boys) | Details |
| Standard | 5 | Rice, J (Jake) | 2 | 1 | 1 | Western Cape Top Schools Championship 2024 (U9 Mixed) | Western Cape Schools - Top Schools 2025 (U9) | Details |
| Rapid | 1 | Badenhorst, R (Rouxan) | 4 | 3 | 1 | Overberg Primary School Trials (Region 2) | Kingsway Chess Open 2025 (U10) | Details |
| Rapid | 2 | Grobbelaar, M (Marlo) | 4 | 2 | 2 | Kingsway Open 2023 (U8) | Kingsway Chess Open 2025 (U10) | Details |
| Rapid | 3 | Rock, A (Albert) | 3 | 2 | 1 | Kingsway Open 2023 (U8) | Kingsway Chess Open 2025 (U10) | Details |
| Rapid | 4 | Marais, J (Janli) | 2 | 2 | 0 | Overberg Schools & Federation Open 2025 (U9) | Curro Hermanus Summer Open 2025 (U9) | Details |
| Rapid | 5 | Faasen, C (Charles) | 2 | 0 | 2 | Overberg Primary School Trials (Region 2) | Overberg Schools - PS Trials (Region 1) 2025 (U9 Boys) | Details |