Efimov, Sergey
Current rating: 1311
Record: 37-55-6
| Grand Prix Bangkok 2019 (ELD limited) | starting rating: 1344 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 83 | Hang, Sheng Kwang (1480) | Lost 1-2 | -161328 |
| 3sealed | 312 | Coronel, Jose Reynaldo (1501) | Lost 1-2 | -151313 |
| 4sealed | 300 | Opaspong, Krisada (1482) | Won 2-1 | +211334 |
| 5sealed | 211 | Seah, Danny (1567) | Lost 0-2 | -131321 |
| 6sealed | 248 | Yamada, Hiroshi (1494) | Lost 1-2 | -151306 |
| 7sealed | 232 | Christian, Andrew (1464) | Lost 0-2 | -151291 |
| 8sealed | 188 | Morishige, Yosuke (1412) | Won 2-0 | +201311 |
| top | average opponent: 1486record: 2-5 | new rating: 1311 | ||
| Grand Prix Lille 2018 (GRN standard) | starting rating: 1383 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 44 | Rosette, Michael (1736) | Lost 0-2 | -111372 |
| 3standard | 453 | Klingel, Marc (1509) | Lost 0-2 | -161356 |
| 4standard | 541 | Nicolas, Arnaud (1481) | Lost 0-2 | -161340 |
| 5standard | 594 | Gajewski, Thomas (1323) | Draw 1-1 | 01340 |
| 6standard | 535 | Statello, Jean-Claude (1305) | Lost 1-2 | -191321 |
| 7standard | 509 | Scalea, Domenico (1445) | Draw 1-1 | +31324 |
| 8standard | 469 | Olejniczak, Andrzej (1441) | Won 2-1 | +201344 |
| top | average opponent: 1463record: 1-4-2 | new rating: 1344 | ||
| Grand Prix Copenhagen 2018 (DOM standard) | starting rating: 1377 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 44 | Steinaa, Daniel (1760) | Lost 0-2 | -111366 |
| 3standard | 286 | Nielsen, Peter Alexander Stockmal Brakker (1500) | Lost 1-2 | -161350 |
| 4standard | 323 | Cummings Eliassen, Theodor (1620) | Won 2-1 | +231373 |
| 5standard | 269 | Huepper, Florian (1542) | Lost 1-2 | -151358 |
| 6standard | 258 | Seebach, Matthias (1511) | Lost 0-2 | -151343 |
| 7standard | 258 | Thorsteinsson, Geirlaugur Cecil (1466) | Won 2-0 | +201363 |
| 8standard | 220 | Achim, Cosmin (1490) | Won 2-1 | +201383 |
| top | average opponent: 1556record: 3-4 | new rating: 1383 | ||
| Grand Prix Beijing 2018 (DOM limited) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 77 | Xue, Hai (1498) | Lost 0-2 | -171427 |
| 2sealed | 321 | Wang, Heling (1368) | Won 2-1 | +171444 |
| 3sealed | 356 | Xu, Yiwei (1359) | Won 2-1 | +171461 |
| 4sealed | 186 | Su, Weilong (1577) | Lost 1-2 | -161445 |
| 5sealed | 233 | Wang, Hao 5565 (1482) | Lost 0-2 | -171428 |
| 6sealed | 321 | Enomoto, Keisuke (1526) | Lost 1-2 | -171411 |
| 7sealed | 320 | Jin, Wei (1453) | Lost 1-2 | -171394 |
| 8sealed | 280 | Lu, Wenlong (1451) | Lost 1-2 | -171377 |
| top | average opponent: 1464record: 2-6 | new rating: 1377 | ||
| Grand Prix Shanghai 2017 (XLN standard) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 131 | Ye, Cong (1554) | Won 2-1 | +191498 |
| 4standard | 53 | Bai, Hualin (1761) | Lost 0-2 | -131485 |
| 5standard | 129 | Han, Bing (1934) | Lost 0-2 | -101475 |
| 6standard | 111 | Bao, Hong Jie (1501) | Lost 0-2 | -181457 |
| 7standard | 222 | Han, Xiaochun (1500) | Lost 1-2 | -171440 |
| 8standard | 260 | Lee, Chiung Ping (1536) | Lost 1-2 | -161424 |
| 9standard | 235 | Yang, Dehua (1567) | Won 2-0 | +201444 |
| top | average opponent: 1622record: 2-5 | new rating: 1444 | ||
| Grand Prix Copenhagen 2017 (modern) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 160 | Guldbaek-Olesen, Kenni (1518) | Lost 1-2 | -181519 |
| 2modern | 626 | Overgaard, Anders (1484) | Lost 0-2 | -191500 |
| 3modern | 808 | Lee, Kim (1463) | Won 2-1 | +171517 |
| 4modern | 711 | Nyboe, Mikkel (1483) | Won 2-1 | +181535 |
| 5modern | 669 | Kiel, Mikkel (1470) | Lost 1-2 | -191516 |
| 6modern | 751 | Jensen, Kenneth (1482) | Lost 1-2 | -191497 |
| 7modern | 659 | Larsson, Isak (1463) | Lost 0-2 | -191478 |
| 8modern | 634 | Ruhl, Alexander (1543) | Lost 1-2 | -161462 |
| 9modern | 564 | Bloch, Alexander (1431) | Won 2-1 | +171479 |
| top | average opponent: 1482record: 3-6 | new rating: 1479 | ||
| Grand Prix Beijing 2017 (AKH limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 110 | Soo, Brendan (1627) | Won 2-0 | +201501 |
| 2sealed | 156 | Dong, Chen (1518) | Draw 1-1 | +11502 |
| 3sealed | 255 | Yan, Xia (1441) | Lost 0-2 | -201482 |
| 4sealed | 341 | Huang, Shuye (1499) | Draw 1-1 | +11483 |
| 5sealed | 401 | Wu, Wenbo (1385) | Won 2-0 | +161499 |
| 6sealed | 316 | Wang, Shao (1409) | Lost 0-2 | -201479 |
| 7sealed | 370 | Wei, Kun (1421) | Won 2-1 | +171496 |
| 8sealed | 296 | Long, Zhou (1768) | Won 2-0 | +231519 |
| 9sealed | 225 | Ren, Chao (1520) | Won 2-0 | +181537 |
| top | average opponent: 1510record: 5-2-2 | new rating: 1537 | ||
| Grand Prix Kuala Lumpur 2016 (KLD standard) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 54 | Tnee, Jeremy Han Chong (1452) | Lost 1-2 | -191500 |
| 2standard | 164 | Miranda, Emmanuel (1482) | Won 2-1 | +181518 |
| 3standard | 264 | Kong, Rayner (1585) | Lost 0-0 | -171501 |
| 4standard | 262 | Nuryanto, Tommy (1500) | Lost 1-2 | -181483 |
| 5standard | 294 | Horwood, John (1464) | Lost 1-2 | -181465 |
| 6standard | 306 | Panganiban, Paolo (1422) | Draw 1-1 | -11464 |
| 7standard | 286 | Khoo, Patrick (1447) | Won 2-0 | +181482 |
| 8standard | 251 | Uy, Jason (1462) | Lost 0-2 | -191463 |
| 9standard | 245 | Inpanbutr, Tanis (1423) | Won 2-0 | +181481 |
| top | average opponent: 1471record: 3-5-1 | new rating: 1481 | ||
| Grand Prix Beijing 2016 (SOI limited) | starting rating: 1441 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 124 | Zhou, Yun Feng (1530) | Won 2-1 | +201461 |
| 2sealed | 115 | Xu, Ruitian (1516) | Lost 1-2 | -171444 |
| 3sealed | 386 | Niu, Yaoqi (1468) | Lost 0-2 | -181426 |
| 4sealed | 400 | Chen, Yaliang (1486) | Won 2-0 | +191445 |
| 5sealed | 337 | Chang, Xiang (1500) | Lost 1-2 | -171428 |
| 6sealed | 378 | Wu, Ryan (1487) | Won 2-0 | +191447 |
| 7sealed | 304 | Yin, Xin (1761) | Won 2-0 | +241471 |
| 8sealed | 196 | Wu, Ziliu (1519) | Won 2-1 | +191490 |
| 9sealed | 138 | Fu, Yuanling (1540) | Won 2-1 | +181508 |
| 10draft | 121 | Song, Yihuan (1517) | Lost 1-2 | -171491 |
| 11draft | 116 | Chen, Zhuo (1490) | Lost 0-2 | -181473 |
| 12draft | 140 | Wang, Yi 6002 (1593) | Lost 0-2 | -161457 |
| 13draft | 36 | Wang, Jianian (1491) | Won 2-0 | +181475 |
| 14draft | 55 | Mashima, Mitsuharu (1766) | Won 2-0 | +241499 |
| 15draft | 56 | Zhao, Haotian (1658) | Won 2-1 | +201519 |
| top | average opponent: 1555record: 9-6 | new rating: 1519 | ||
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1397 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 278 | Marciniszyn, Michal (1703) | Lost 0-2 | -131384 |
| 2standard | 504 | Vavra, Nikola (1635) | Won 2-0 | +221406 |
| 3standard | 525 | Sautner, Marcel (1482) | Lost 1-2 | -161390 |
| 4standard | 554 | Krehl, Yann (1483) | Won 2-1 | +191409 |
| 5standard | 471 | Huschenbeth, Arne (1501) | Won 2-0 | +201429 |
| 6standard | 268 | De Colle, Mattia (1701) | Won 2-1 | +231452 |
| 7standard | 250 | Kutny, Jozef (1543) | Lost 0-2 | -161436 |
| 8standard | 286 | Schumacher, Stefan (1649) | Won 2-1 | +211457 |
| 9standard | 222 | Uhlich, Johannes (1534) | Lost 1-2 | -161441 |
| top | average opponent: 1581record: 5-4 | new rating: 1441 | ||
| Grand Prix Krakow 2015 (DTK standard) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 69 | Kalamarz, Lukasz (1405) | Won 2-1 | +171481 |
| 2standard | 91 | Huke, Lothar (1488) | Draw 1-1 | 01481 |
| 3standard | 310 | Jabs, Slawomir (1706) | Lost 0-1 | -141467 |
| 4standard | 413 | Gronlund, Ville (1450) | Lost 0-2 | -181449 |
| 5standard | 461 | Reber, Philipp (1419) | Lost 0-2 | -191430 |
| 6standard | 462 | Dohmen, David (1467) | Lost 0-2 | -171413 |
| 7standard | 410 | Czapski, Mateusz (1451) | Lost 0-2 | -171396 |
| 8standard | 348 | Was, Michal (1408) | Won 2-0 | +181414 |
| 9standard | 288 | Solomon, Sorin (1451) | Lost 0-2 | -171397 |
| top | average opponent: 1472record: 2-6-1 | new rating: 1397 | ||
| Grand Prix Moscow 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 173 | Leonov, Alexander (1500) | Lost 0-2 | -181482 |
| 2sealed | 270 | Pinegin, Roman (1482) | Lost 1-2 | -181464 |
| top | average opponent: 1491record: 0-2 | new rating: 1464 | ||