PLAYER PAGE
Junjie Weng
1180313026Buffalo City (EBC)Personal
Main rating
| Rating | 1503.2 |
| K-factor | 32 |
| Floor | 1069 |
| Highest | 1589.8 (2025-09-01) |
| Min/Max +/- allowed | 95 |
| Rating Change () | |
| Games | 5 |
| Score | 3 |
| We | 3.72 |
| SWe | -0.59 |
| Temp +/- | -19 |
| Penalties | 0 |
| Weight perform | 1432 |
| Final +/- | -19 |
| New Rating () | |
| Rating | 1484.2 |
| K-factor | 32 |
| Floor | 1069 |
| Highest | 1589.8 (2025-09-01) |
| Min/Max +/- allowed | 95.2 |
Standard rating
| Rating | 1514.9 |
| K-factor | 32 |
| Floor | 1068.6 |
| Highest | 1590.4 (2025-09-01) |
| Min/Max +/- allowed | 95.1 |
| Rating Change () | |
| Games | 5 |
| Score | 3 |
| We | 3.78 |
| SWe | -0.78 |
| Temp +/- | -24.8 |
| Penalties | 0 |
| Weight perform | 1423.6 |
| Final +/- | -24.8 |
| New Rating () | |
| Rating | 1490.1 |
| K-factor | 32 |
| Floor | 1068.6 |
| Highest | 1590.4 (2025-09-01) |
| Min/Max +/- allowed | 95.1 |
Rapid rating
| Rating | 1306 |
| K-factor | 36 |
| Floor | 812.9 |
| Highest | 1312.9 (2025-08-01) |
| Min/Max +/- allowed | 141.2 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 0 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1306 |
| K-factor | 36 |
| Floor | 812.9 |
| Highest | 1312.9 (2025-08-01) |
| Min/Max +/- allowed | 141.2 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-10-01) |
| 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 (2024-10-01) |
| Min/Max +/- allowed | 165.8 |
Rating Graph
Tournaments
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 Buffalo City Chess Trials 2 (U8+U10 Boys) | Standard | 2026-02-28 | 2026-02-28 | Buffalo City | 5 | 1503.2 | 5 | 3 | 1386.6 | -19 | Details |
| # | Tournament | Type | Start | End | Host | Rounds | Rating | Games | Score | Perform | Rat+/- | Details |
| 1 | 2026 Buffalo City Chess Trials 1 (U8+U10) | Standard | 2026-02-07 | 2026-02-07 | Buffalo City (EBC) | 5 | 1493.4 | 5 | 4 | 1548.7 | 0 | Details |
| 2 | Chess Vikings Trials 2 2025 (D) | Standard | 2025-10-18 | 2025-10-18 | Buffalo City (EBC) | 5 | 1491.7 | 5 | 4 | 1608.8 | 0 | Details |
| 3 | BC Open 2025 (U10-U14) | Rapid | 2025-10-04 | 2025-10-04 | Buffalo City (EBC) | 7 | 1491.7 | 6 | 3 | 1402.9 | 0 | Details |
| 4 | Buffalo City Chess Clubs League 2025 (B) | Standard | 2025-09-20 | 2025-09-20 | Buffalo City (EBC) | 6 | 1589.8 | 6 | 2 | 1271.5 | 0 | Details |
| 5 | Buffalo City Chess Clubs League 2025 (B) | Standard | 2025-09-20 | 2025-09-20 | Buffalo City (EBC) | 6 | 1589.8 | 6 | 2 | 1271.5 | 0 | Details |
| 6 | EC Closed 2025 (U8+U10 Boys) | Standard | 2025-09-06 | 2025-09-07 | Nelson Mandela Bay (ENM) | 6 | 1589.8 | 6 | 4 | 1516.4 | 0 | Details |
| 7 | Buffalo City Chess Junior Closed 2025 (U8 Open+Girls) | Standard | 2025-08-16 | 2025-08-16 | Buffalo City (EBC) | 5 | 1525.3 | 5 | 5 | 1738.5 | 0 | Details |
| 8 | 3rd Chess Vikings Open Championship 2025 (D) | Standard | 2025-08-02 | 2025-08-02 | Buffalo City (EBC) | 6 | 1525.3 | 6 | 5 | 1574.5 | 0 | Details |
| 9 | BC Schools Chess Festival 2025 (U7) | Standard | 2025-07-26 | 2025-07-26 | Buffalo City (EBC) | 7 | 1525.3 | 6 | 5 | 1530 | 0 | Details |
| 10 | Beacon Bay Winter Cup 2025 (C) | Rapid | 2025-07-09 | 2025-07-09 | Buffalo City (EBC) | 6 | 1514 | 6 | 5 | 1603.8 | 0 | Details |
| 11 | 2nd Vikings Classical 2025 (D) | Standard | 2025-05-24 | 2025-05-24 | Buffalo City (EBC) | 5 | 1518 | 5 | 4 | 1496.7 | 0 | Details |
| 12 | 2025 Buffalo City Chess Trials 3 (U8) | Standard | 2025-05-10 | 2025-05-10 | Buffalo City (EBC) | 5 | 1498.3 | 5 | 5 | 1679.7 | 0 | Details |
| 13 | EC Open 2025 (U8-U14 Boys) | Standard | 2025-05-02 | 2025-05-02 | Buffalo City (EBC) | 7 | 1498.3 | 7 | 3 | 1324.5 | 0 | Details |
| 14 | Vikings Holiday 2025 (D) | Standard | 2025-04-05 | 2025-04-05 | Buffalo City (EBC) | 6 | 1261.1 | 6 | 4.5 | 1474.7 | 0 | Details |
| 15 | 2025 Buffalo City Chess Trials 2 (U8) | Standard | 2025-04-12 | 2025-04-12 | Buffalo City (EBC) | 5 | 1261.1 | 5 | 5 | 1631.2 | 0 | Details |
| 16 | 2025 Buffalo City Chess Trials 1 (U8) | Standard | 2025-03-22 | 2025-03-22 | Buffalo City (EBC) | 5 | 1261.1 | 5 | 4 | 1526.8 | 0 | Details |
| 17 | Vikings Classical March 2025 (U8) | Standard | 2025-03-15 | 2025-03-15 | Buffalo City (EBC) | 5 | 1212.3 | 5 | 4 | 1483.2 | 0 | Details |
| 18 | Rapid Feb 2nd Leg 2025 (U8+U10) | Rapid | 2025-02-22 | 2025-02-22 | Buffalo City (EBC) | 7 | 1191.5 | 7 | 3.5 | 1206.5 | 0 | Details |
| 19 | Rapid Feb Leg 1 2025 (U8+U10) | Rapid | 2025-02-15 | 2025-02-15 | Buffalo City (EBC) | 7 | 1191.5 | 7 | 5 | 1378.3 | 0 | Details |
| 20 | EL Junior Closed 2024 (U10) | Standard | 2024-11-23 | 2024-11-23 | Buffalo City (EBC) | 5 | 1195.4 | 5 | 1 | 956.1 | 0 | Details |
| 21 | East London Open 2024 (C) | Standard | 2024-11-05 | 2024-11-05 | Buffalo City (EBC) | 6 | 1200 | 5 | 2.5 | 1181.6 | 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 | 10 |
| Wins | 7 |
| Draws | 0 |
| Losses | 3 |
| White | 5 |
| Black | 5 |
| White wins | 4 |
| Black wins | 3 |
| Score | 7 |
| Percent | 70 |
| Dp | 170 |
| AOR | 1297.7 |
| Performance | 1467.7 |
Game statistics (History)
| Games | 124 |
| Wins | 80 |
| Draws | 7 |
| Losses | 37 |
| White | 62 |
| Black | 62 |
| White wins | 39 |
| Black wins | 41 |
| Score | 83.5 |
| Percent | 67.3 |
| Dp | 147.4 |
| AOR | 1291.5 |
| Performance | 1438.9 |
Rankings (Main)
| National | |
| Overall | 1767 |
| Gender | 1558 |
| Age group | 35 |
| Gender/Age | 29 |
| Provincial | |
| Overall | 184 |
| Gender | 161 |
| Age group | 5 |
| Gender/Age | 5 |
| Regional | |
| Overall | 66 |
| Gender | 54 |
| Age group | 3 |
| Gender/Age | 3 |
Rankings (Standard)
| National | |
| Overall | 1522 |
| Gender | 1346 |
| Age group | 32 |
| Gender/Age | 26 |
| Provincial | |
| Overall | 154 |
| Gender | 136 |
| Age group | 5 |
| Gender/Age | 5 |
| Regional | |
| Overall | 57 |
| Gender | 48 |
| Age group | 3 |
| Gender/Age | 3 |
Rankings (Rapid)
| National | |
| Overall | 1854 |
| Gender | 1535 |
| Age group | 62 |
| Gender/Age | 52 |
| Provincial | |
| Overall | 178 |
| Gender | 151 |
| Age group | 2 |
| Gender/Age | 2 |
| Regional | |
| Overall | 49 |
| Gender | 39 |
| Age group | 2 |
| Gender/Age | 2 |
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 | 10 |
| Score | 7 |
| Percent | 70 |
| Aor | 1297.7 |
| Dp | 170 |
| Prat | 1467.7 |
Performance (12 months)
| Games | 100 |
| Score | 71.5 |
| Percent | 71.5 |
| Aor | 1313.7 |
| Dp | 182.8 |
| Prat | 1496.4 |
Performance (History)
| Games | 124 |
| Score | 83.5 |
| Percent | 67.3 |
| Aor | 1291.5 |
| Dp | 147.4 |
| Prat | 1438.9 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Makgaila, M (Moagi) | 8 | 4 | 4 | Rapid Feb 2nd Leg 2025 (U8+U10) | Buffalo City Chess Junior Closed 2025 (U8 Open+Girls) | Details |
| Overall | 2 | Mdaka, V (Vuyanathi) | 6 | 3 | 3 | Rapid Feb Leg 1 2025 (U8+U10) | 2026 Buffalo City Chess Trials 1 (U8+U10) | Details |
| Overall | 3 | Xu, J (Jiayi) | 6 | 2 | 4 | Rapid Feb 2nd Leg 2025 (U8+U10) | 2026 Buffalo City Chess Trials 1 (U8+U10) | Details |
| Overall | 4 | Coetzee, N (Niki) | 5 | 3 | 2 | Vikings Classical March 2025 (U8) | Buffalo City Chess Junior Closed 2025 (U8 Open+Girls) | Details |
| Overall | 5 | Kapp, M (Michael) | 5 | 4 | 1 | Vikings Classical March 2025 (U8) | 2026 Buffalo City Chess Trials 2 (U8+U10 Boys) | Details |
| Standard | 1 | Makgaila, M (Moagi) | 7 | 3 | 4 | Vikings Classical March 2025 (U8) | Buffalo City Chess Junior Closed 2025 (U8 Open+Girls) | Details |
| Standard | 2 | Xu, J (Jiayi) | 5 | 2 | 3 | 2025 Buffalo City Chess Trials 1 (U8) | 2026 Buffalo City Chess Trials 1 (U8+U10) | Details |
| Standard | 3 | Coetzee, N (Niki) | 5 | 3 | 2 | Vikings Classical March 2025 (U8) | Buffalo City Chess Junior Closed 2025 (U8 Open+Girls) | Details |
| Standard | 4 | Mxabo, S (Sophumelela) | 4 | 2 | 2 | Vikings Classical March 2025 (U8) | 2026 Buffalo City Chess Trials 1 (U8+U10) | Details |
| Standard | 5 | Kapp, M (Michael) | 4 | 3 | 1 | Vikings Classical March 2025 (U8) | 2026 Buffalo City Chess Trials 2 (U8+U10 Boys) | Details |
| Rapid | 1 | Mdaka, V (Vuyanathi) | 3 | 2 | 1 | Rapid Feb Leg 1 2025 (U8+U10) | Beacon Bay Winter Cup 2025 (C) | Details |
| Rapid | 2 | Jikijela, A (Ayana) | 2 | 0 | 2 | Rapid Feb Leg 1 2025 (U8+U10) | Beacon Bay Winter Cup 2025 (C) | Details |
| Rapid | 3 | Mazikana, E (Elsie) | 2 | 2 | 0 | Rapid Feb Leg 1 2025 (U8+U10) | Rapid Feb 2nd Leg 2025 (U8+U10) | Details |