PLAYER TOURNAMENT DETAILS
Calvin Nicholas Jacobs
109086379Tshwane (GTP)Tournament details
| Tour Id | 20251980 |
| Group Id | 20251967 |
| Name | South African Open 2025 |
| Section | Championship |
| Rounds | 11 |
| Format | Swiss |
| Type | Classical |
| Start | 2025-06-28 |
| End | 2025-07-05 |
| Submitted | 2025-07-06 |
| Rated | 2025-07-06 |
| Submit age weight | 1 |
| Host | Johannesburg Metro (GJM) |
| Total time | 120 |
| Time weight | 1 |
| Official results | Official results |
General
| Games | 11 |
| Score | 6.5 |
| Percent | 59.1 |
| Dp | 77.3 |
| Aor | 2096.7 |
| Perform | 2173.9 |
| Penalties | 0 |
| Wins | 5 |
| Draws | 3 |
| Losses | 3 |
| White | 6 |
| Black | 5 |
| White wins | 2 |
| Black wins | 3 |
| Default wins | 0 |
| Default losses | 0 |
| Byes | 0 |
| Half byes | 0 |
| Rank | 27 |
| Final Pos | 9 |
| Share Pos | 8 |
| Count for rating | Yes |
Analysis (Main)
| Rating | 1963.2 |
| K-factor | 20 |
| Score | 6.5 |
| Expected score | 3.83 |
| Score - Expected score | 2.67 |
| Rating +/- | 53.4 |
Analysis (Type)
| Rating | 1971.2 |
| K-factor | 20 |
| Score | 6.5 |
| Expected score | 3.8 |
| Score - Expected score | 2.7 |
| Rating +/- | 54 |
Opponents
| Round | Date | Opponent | Fed | Title | Main | Type | Col | Res | Main | Type | Cfr | ||||
| We | Swe | +/- | We | Swe | +/- | ||||||||||
| 1 | 2025-06-28 | Oatlhotse, P (Providence) | GJM | IM | 2226.9 | 2263.3 | W | 0 | 0.23 | -0.23 | -4.6 | 0.2 | -0.2 | -4 | Yes |
| 2 | 2025-06-28 | Buba, V (Vukile) | FLW | 1826.6 | 1809.1 | B | 1 | 0.62 | 0.38 | 7.6 | 0.65 | 0.35 | 7 | Yes | |
| 3 | 2025-06-29 | Smit, D (Devon) | GTP | RM | 2048.6 | 2050.2 | W | 1 | 0.44 | 0.56 | 11.2 | 0.45 | 0.55 | 11 | Yes |
| 4 | 2025-06-29 | Mahlangu, S (Sello) | LMG | CM | 2071.1 | 2087.3 | B | 0 | 0.33 | -0.33 | -6.6 | 0.32 | -0.32 | -6.4 | Yes |
| 5 | 2025-06-30 | Felix, R (Raphael) | NBR | CM | 2085.7 | 2102.1 | B | 1 | 0.32 | 0.68 | 13.6 | 0.31 | 0.69 | 13.8 | Yes |
| 6 | 2025-07-01 | Palmer, RN (Reegan) | WCT | CM | 2035.4 | 2040.1 | W | 0.5 | 0.46 | 0.04 | 0.8 | 0.46 | 0.04 | 0.8 | Yes |
| 7 | 2025-07-02 | Van Zyl-Rudd, J (Jack) | ENM | FM | 2317.8 | 2325.3 | B | 1 | 0.05 | 0.95 | 19 | 0.05 | 0.95 | 19 | Yes |
| 8 | 2025-07-03 | Peter, NM (Neathan Mninawa) | ENM | CM | 1964.8 | 1970.3 | W | 1 | 0.54 | 0.46 | 9.2 | 0.54 | 0.46 | 9.2 | Yes |
| 9 | 2025-07-04 | Beukes, DM (Dante) | CSA | IM | 2169 | 2162.1 | W | 0.5 | 0.3 | 0.2 | 4 | 0.32 | 0.18 | 3.6 | Yes |
| 10 | 2025-07-04 | Simpson, M (Michael) | NBR | IM | 2190.1 | 2214.8 | B | 0 | 0.19 | -0.19 | -3.8 | 0.17 | -0.17 | -3.4 | Yes |
| 11 | 2025-07-05 | Hercules, BV (Benjamin Vincent) | GJM | CM | 2127.2 | 2151.2 | W | 0.5 | 0.35 | 0.15 | 3 | 0.33 | 0.17 | 3.4 | Yes |