Coston, Chris
Current rating: 1657
| Grand Prix Detroit 2013 (modern) | starting rating: 1632 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 215 | Watson, Keith (1500) | Won 2-1 | +161648 |
| 2modern | 159 | Stenborg, Michael (1686) | Won 0-0 | +191667 |
| 3modern | 228 | Cato, Daniel (1620) | Won 2-0 | +171684 |
| 4modern | 71 | Swift, Orrin (1755) | Won 2-1 | +191703 |
| 5modern | 29 | Butler, Jessie (1585) | Lost 1-2 | -201683 |
| 6modern | 78 | Marquardt, Robert (1568) | Lost 1-2 | -201663 |
| 7modern | 282 | Stewart, Alexander (1468) | Won 2-1 | +141677 |
| 8modern | 177 | Desotelle, Dwight (1518) | Lost 0-2 | -201657 |
| top | average opponent: 1588record: 5-3 | new rating: 1657 | ||
| Grand Prix Columbus 2012 (modern) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 4modern | 62 | Sachs, Mitchell (1539) | Won 2-0 | +181558 |
| 5modern | 68 | Knapp, Hans (1604) | Won 2-0 | +191577 |
| 6modern | 23 | Smith, Andrew M (1520) | Won 2-0 | +171594 |
| 7modern | 4 | Beasley, Orrin (1896) | Lost 0-2 | -131581 |
| 8modern | 47 | Edgerle, Nick (1562) | Won 2-1 | +181599 |
| 9modern | 21 | Vasovski, Michael (1710) | Lost 1-2 | -161583 |
| 10modern | 51 | Blegen, Eric (1611) | Won 2-1 | +191602 |
| 11modern | 19 | Reinhardt, Adam (1633) | Lost 1-2 | -181584 |
| 12modern | 57 | Dreher, Gregory (1644) | Won 2-1 | +191603 |
| 13modern | 22 | Majlaton, Alex (1937) | Won 2-0 | +241627 |
| 14modern | 13 | Baylock, Deshaun (1639) | Won 2-1 | +181645 |
| 15modern | 12 | Utter-Leyton, Josh (1936) | Lost 0-2 | -131632 |
| top | average opponent: 1686record: 8-4 | new rating: 1632 | ||
| Grand Prix Indianapolis 2012 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4legacy | 143 | Hampton, Jesse (1941) | Won 2-1 | +261526 |
| 5legacy | 29 | Finley, Alex (1552) | Won 2-1 | +181544 |
| 6legacy | 19 | Howe, James (1592) | Lost 0-2 | -171527 |
| 7legacy | 83 | Barber, Jon (1638) | Lost 1-2 | -161511 |
| 8legacy | 89 | Muir, Jeremy (1669) | Won 2-1 | +211532 |
| 9legacy | 50 | English, Eric (1779) | Won 2-1 | +221554 |
| 10legacy | 37 | Bohn, Jonathan (1620) | Lost 0-2 | -171537 |
| 11legacy | 74 | Naylor, Jamie (1639) | Won 2-1 | +201557 |
| 12legacy | 39 | Elgin, Jack (1633) | Won 2-0 | +201577 |
| 13legacy | 22 | Coloyan, Peter (1576) | Lost 0-2 | -181559 |
| 14legacy | 40 | Trufasiu, Razvan (1536) | Lost 1-2 | -191540 |
| top | average opponent: 1652record: 6-5 | new rating: 1540 | ||