PLAYER PAGE
Ethan Da Costa
1120306437Tshwane (GTP)Personal
Main rating
| Rating | 1289.3 |
| K-factor | 36 |
| Floor | 831.2 |
| Highest | 1331.2 (2025-04-01) |
| Min/Max +/- allowed | 138 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1244.9 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1289.3 |
| K-factor | 36 |
| Floor | 831.2 |
| Highest | 1331.2 (2025-04-01) |
| Min/Max +/- allowed | 137.6 |
Standard rating
| Rating | 1286.1 |
| K-factor | 36 |
| Floor | 825.3 |
| Highest | 1325.3 (2025-04-01) |
| Min/Max +/- allowed | 138.7 |
| Rating Change () | |
| Games | 0 |
| Score | 0 |
| We | 0 |
| SWe | 0 |
| Temp +/- | 0 |
| Penalties | 0 |
| Weight perform | 1244.9 |
| Final +/- | 0 |
| New Rating () | |
| Rating | 1286.1 |
| K-factor | 36 |
| Floor | 825.3 |
| Highest | 1325.3 (2025-04-01) |
| Min/Max +/- allowed | 138.7 |
Rapid rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-12-01) |
| 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 (2024-12-01) |
| Min/Max +/- allowed | 165.8 |
Blitz rating
| Rating | 1200 |
| K-factor | 36 |
| Floor | 700 |
| Highest | 1200 (2024-12-01) |
| 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 (2024-12-01) |
| 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 | 2026 Etienne Lewis (U16) | Standard | 2026-08-08 | 2026-08-10 | Tshwane (GTP) | 7 | 1289.3 | 7 | 3.5 | 1431.4 | 52 | Details |
| 2 | Elise Steenkamp 2026 (Rook) | Standard | 2026-06-13 | 2026-06-15 | Tshwane (GTP) | 7 | 1256 | 7 | 3 | 1193.9 | -18.7 | Details |
| 3 | 2026 PBHS Open (C) | Standard | 2026-04-25 | 2026-04-25 | Tshwane (GTP) | 5 | 1268.1 | 5 | 2 | 1206.7 | -12.1 | Details |
| 4 | 2026 Tshwane Chess Registration Tournament (D2) | Standard | 2026-01-31 | 2026-01-31 | Tshwane (GTP) | 5 | 1274 | 5 | 3 | 1211.2 | -5.3 | Details |
| 5 | Gauteng Inter-Region at Emerald Resort 2025 (U14 Candidates) | Standard | 2025-12-06 | 2025-12-07 | Sedibeng (GSV) | 5 | 1272 | 5 | 2.5 | 1275.2 | 1.1 | Details |
| 6 | 2025 Centurion Chess Open Tournament (C) | Standard | 2025-09-27 | 2025-09-27 | Tshwane (GTP) | 5 | 1319.3 | 5 | 1 | 1043 | -26.2 | Details |
| 7 | 2025 Etienne Lewis Closed Chess Tournament (U14) | Standard | 2025-08-08 | 2025-08-10 | Tshwane (GTP) | 7 | 1306.8 | 7 | 3 | 1357.9 | 6.9 | Details |
| 8 | 2025 Menlo Open (U14) | Standard | 2025-07-26 | 2025-07-26 | Tshwane (GTP) | 5 | 1291 | 5 | 3 | 1388 | 8.8 | Details |
| 9 | 2025 Silver Lakes Chess Club Open Chess Tournament (C) | Standard | 2025-05-03 | 2025-05-03 | Tshwane (GTP) | 5 | 1331.2 | 5 | 1 | 1110.2 | -22.2 | Details |
| 10 | Lubowski Open 2025 (D1) | Standard | 2025-03-21 | 2025-03-22 | Tshwane (GTP) | 5 | 1288.5 | 5 | 3 | 1408.8 | 14.1 | Details |
| 11 | 2025 Tshwane Chess OPEN Registration Tournament (B1) | Standard | 2025-01-25 | 2025-01-25 | Tshwane (GTP) | 5 | 1222.6 | 5 | 3 | 1441.4 | 21.9 | Details |
| 12 | Gauteng Inter-Region at UJ 2024 (U16 Candidates) | Standard | 2024-12-07 | 2024-12-08 | Johannesburg Metro (GJM) | 5 | 1215.1 | 5 | 2.5 | 1210.5 | 0.4 | Details |
| 13 | Lardies Ope 2024 (C) | Standard | 2024-10-26 | 2024-10-26 | Tshwane (GTP) | 5 | 1129.9 | 5 | 4 | 1451 | 30.5 | Details |
| 14 | Centurion Chess Open Tournament 2024 (C) | Standard | 2024-09-21 | 2024-09-21 | Tshwane (GTP) | 5 | 1186.7 | 5 | 2.5 | 1151.9 | -4.1 | Details |
| 15 | 2024 Etienne Lewis (U14) | Standard | 2024-08-30 | 2024-09-01 | Tshwane (GTP) | 7 | 1186.7 | 7 | 2 | 1035.5 | -24.2 | Details |
| 16 | 2024 Jacaranda Round Robin Open Chess Tournament (N) | Standard | 2024-08-17 | 2024-08-17 | Tshwane (GTP) | 5 | 1133.6 | 5 | 4 | 1411.7 | 26.6 | Details |
| 17 | 2024 Midstream College Open Chess Tournament (B2) | Standard | 2024-07-20 | 2024-07-20 | Tshwane (GTP) | 5 | 1200 | 4 | 0 | 875.3 | -25.6 | Details |
| 18 | Menlopark Open Chess Tournament 2024 (C) | Standard | 2024-07-13 | 2024-07-13 | Tshwane (GTP) | 5 | 1200 | 5 | 2.5 | 1158.6 | -4.6 | Details |
| 19 | 2024 Prestige College Open Chess Tournament (D) | Standard | 2024-07-06 | 2024-07-06 | Tshwane (GTP) | 5 | 1200 | 5 | 2 | 1159.9 | -3 | 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 | 24 |
| Wins | 10 |
| Draws | 3 |
| Losses | 11 |
| White | 13 |
| Black | 11 |
| White wins | 4 |
| Black wins | 6 |
| Score | 11.5 |
| Percent | 47.9 |
| Dp | -17.7 |
| AOR | 1287.2 |
| Performance | 1269.4 |
Game statistics (History)
| Games | 102 |
| Wins | 40 |
| Draws | 15 |
| Losses | 47 |
| White | 53 |
| Black | 49 |
| White wins | 23 |
| Black wins | 17 |
| Score | 47.5 |
| Percent | 46.6 |
| Dp | -29.2 |
| AOR | 1272 |
| Performance | 1242.9 |
Rankings (Main)
| National | |
| Overall | 6684 |
| Gender | 5459 |
| Age group | 1075 |
| Gender/Age | 845 |
| Provincial | |
| Overall | 2276 |
| Gender | 1856 |
| Age group | 377 |
| Gender/Age | 286 |
| Regional | |
| Overall | 743 |
| Gender | 608 |
| Age group | 127 |
| Gender/Age | 100 |
Rankings (Standard)
| National | |
| Overall | 5954 |
| Gender | 4788 |
| Age group | 947 |
| Gender/Age | 738 |
| Provincial | |
| Overall | 2139 |
| Gender | 1716 |
| Age group | 349 |
| Gender/Age | 263 |
| Regional | |
| Overall | 739 |
| Gender | 591 |
| Age group | 129 |
| Gender/Age | 101 |
Rankings (Rapid)
| 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 |
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 | 24 |
| Score | 11.5 |
| Percent | 47.9 |
| Aor | 1287.2 |
| Dp | -17.7 |
| Prat | 1269.4 |
Performance (12 months)
| Games | 34 |
| Score | 15 |
| Percent | 44.1 |
| Aor | 1287 |
| Dp | -50 |
| Prat | 1237 |
Performance (History)
| Games | 102 |
| Score | 47.5 |
| Percent | 46.6 |
| Aor | 1272 |
| Dp | -29.2 |
| Prat | 1242.9 |
Top 5 opponents most often played
| Type | # | Opponent | Games | White | Black | First tournament | Last tournament | Details |
| Overall | 1 | Labuscagne, W (Waldo) | 3 | 3 | 0 | Centurion Chess Open Tournament 2024 (C) | 2026 Tshwane Chess Registration Tournament (D2) | Details |
| Overall | 2 | Du Toit, J (Janri) | 2 | 1 | 1 | 2024 Etienne Lewis (U14) | Centurion Chess Open Tournament 2024 (C) | Details |
| Overall | 3 | Van Der Merwe, H (Hendrik) | 2 | 0 | 2 | Menlopark Open Chess Tournament 2024 (C) | 2026 Etienne Lewis (U16) | Details |
| Overall | 4 | Madikgetla, R (Rofhiwa) | 2 | 1 | 1 | Elise Steenkamp 2026 (Rook) | 2026 Etienne Lewis (U16) | Details |
| Overall | 5 | Bogaard, A (Anneke) | 2 | 1 | 1 | 2025 Etienne Lewis Closed Chess Tournament (U14) | Elise Steenkamp 2026 (Rook) | Details |
| Standard | 1 | Labuscagne, W (Waldo) | 3 | 3 | 0 | Centurion Chess Open Tournament 2024 (C) | 2026 Tshwane Chess Registration Tournament (D2) | Details |
| Standard | 2 | Allison, F (Francois) | 2 | 1 | 1 | 2025 Centurion Chess Open Tournament (C) | 2026 PBHS Open (C) | Details |
| Standard | 3 | Van Der Walt, H (Henrico) | 2 | 1 | 1 | 2025 Tshwane Chess OPEN Registration Tournament (B1) | 2026 Etienne Lewis (U16) | Details |
| Standard | 4 | Maree, M (Morgan) | 2 | 1 | 1 | 2024 Midstream College Open Chess Tournament (B2) | 2025 Menlo Open (U14) | Details |
| Standard | 5 | Jacobs, H (Hanno) | 2 | 2 | 0 | 2024 Midstream College Open Chess Tournament (B2) | Lubowski Open 2025 (D1) | Details |